Hypothetical Trial and Conviction This question deals with how a hypothetical crime would be tried. Hypothetical situation: The police find two people who have been locked in a room for the past 6 hours. In the room with them is a dead body. Murder! For the sake of simplicity, they somehow know that no one came in or out of the room during those six hours, an eye witness perhaps, but they do know that 3 people went into the room, and only 2 were able to walk out. Survivor A says survivor B was the murderer, and vice versa. All the evidence the police have neither fully incriminates one nor exonerates the other. As they have figured it, there's a 60% chance person A did it and a 40% chance person B did it. How would this case be tried? There's not enough evidence to make a solid case against one, and all the police have is a hunch. And since America's court system processes one case at a time, these two suspects would be tried separately and would likely both be acquitted as there's simply not enough evidence to convict one. So how would this be tried?
Why do you think this is a hypothetical case? The facts almost exactly match R v Rogerson ; R v McNamara (No 57) [2016] NSWSC 1207 (2 September 2016) - 3 men enter a storage unit, 2 men and one dead body leave. Each of the men claims the other committed the murder - the DPP charged both, they were tried together, the jury convicted both and they both received life sentences. For the more general hypothetical: people can be tried together if that serves the interests of justice - defendants can apply to the court for separate trials but that is not always granted (and this may serve as grounds for an appeal ... or not). There is plenty of evidence of a murder, one (at least) of the two people is a murderer - prosecutors would charge both, present the evidence and let the jury decide which, if any, were guilty.
You can't prove a negative, so they can't be convicted of perjury for lying about whether they remember; Yes, they can. The government can convict the witness of perjury by proving that they did remember. This may be difficult, but it's not impossible. Now you may say that we can't ever prove with certainty what a person did or didn't remember. But the legal standard isn't certainty, it's beyond a reasonable doubt. So a jury is allowed to draw a reasonable inference about whether they remembered, based on evidence of their outward behavior and other circumstances. As an extreme example, suppose Alice was overheard chatting freely about topic X an hour before the trial, but when asked about topic X on the stand, said she didn't remember. When presented with evidence of her earlier conversation, a jury could reasonably infer that she was lying about not remembering. Is it possible that she truly had a memory lapse in the intervening hour? Sure, anything is possible. Is it reasonable to believe that she did? Probably not. The US Department of Justice's Criminal Resource Manual has this to say on the subject: Witnesses who claim not to remember, rather than deny a fact, may be prosecuted for perjury. However, the government must prove both that the witness at one time knew the fact and that the witness must have remembered it at the time he or she testified. United States v. Chen, 933 F.2d 793, 795 (9th Cir. 1991). If the dates of the transaction and testimony are sufficiently close, memory may be inferred. Instances in which the witness remembered other events that occurred at the same time or earlier than the event in question, or mentioned the event either immediately before or after his testimony, would be probative of the witness's memory at the time of the testimony. The two witness rule does not apply to prosecutions based on false memory lapses, and circumstantial evidence is sufficient, since there is no direct evidence possible concerning what the defendant actually believed. Gebhard v. United States, 422 F.2d 281, 287 (9th Cir. 1970). There's a similar issue in all laws that deal with a person's knowledge or intent. Suppose Alice hits Bob with a stick and he dies. To convict Alice of murder, it must be proved that by hitting Bob, she intended to kill him. Can we ever really know what was in her heart? Maybe not, but if there is evidence that shortly beforehand, she told someone that she was going to kill Bob, it would be a reasonable inference that this was her intention.
He is probably guilty of negligent homicide or involuntary manslaughter, at most (a minor felony), and is possibly not guilty of a crime at all. The primary distinction between classes of homicide is mens rea (i.e. intent). The only affirmative act he took was to move the pillow. He did so both without intending to or knowing that he would kill Jane (the intent necessary for murder), and also, without clear actual knowledge that he would be creating a risk that Jane would die (a reckless state of mind that would support a conviction for manslaughter). Also, note that Walter himself, at this time, is not engaged in a felony, so he is not guilty of felony murder. We can presume he is present with the consent previously given of the owner of the property and did not mean anyone any harm. Likewise, this is not what is meant by "extreme indifference" for purposes of a murder statute, the paradigm of which is shooting randomly into a crowd knowing that someone will almost certainly be killed without knowing or intending that any particular person will die. The mental state necessary for negligent homicide is the equivalent of "gross negligence" in a civil case and is called "criminal negligence" in a criminal case. To be criminally negligent a person must fail to perceive a substantial and unjustifiable risk that a certain result will occur, and the risk must be of such a nature that the defendant's failure to perceive it constitutes a gross deviation from a reasonable person's standard of care. If a jury found that a reasonable person ought should clearly know that moving a pillow put Jane at risk of dying, then he might be guilty of criminal negligence. But, if a jury found that a reasonable person would not know that moving the pillow put Jane at grave risk of death, his action would not be criminally negligent. There are also at least three questions of causation which is not entirely independent of the question of negligence. First, generally an act is only considered a cause of a consequence if it is a foreseeable result of the action. If Jane's vomit caused death is not a foreseeable result of moving the pillow, then her death might not be legally caused by moving the pillow. Second, how likely is it that she would have died even if Walter had never entered the room. There are lots of ways that the pillow could have been jostled during the night leading to the same result. If it likely would have happened anyway, Walter's involvement might not be the legal cause of the death. Third, how much fault should be attributed to Jane? This is closely related to the second question. If her death was primarily caused by her getting dangerously high and placing herself in a vulnerable position, perhaps Walter's involvement is not a meaningful cause of the death. A New Mexico court has held that the defense that the victim was negligent has value only if it establishes that the victim's negligence was the sole cause of the accident. State v. Maddox, 99 N.M. 490, 660 P.2d 132 (Ct. App. 1983). But, what about Jesse's negligence? Under a relevant standard criminal jury instruction in New Mexico: The State must prove beyond a reasonable doubt that the defendant's act was a significant cause of the death of __________________ (name of victim). Evidence has been presented that the negligence of a person other than the defendant may have contributed to the cause of death. Such contributing negligence does not relieve the defendant of responsibility for an act that significantly contributed to the cause of the death so long as the death was a foreseeable result of the defendant's actions. However, if you find the negligence of a person other than the defendant was the only significant cause of death, then the defendant is not guilty of the offense of __________________ (name of offense). Caveat: A number of states impose strict criminal liability on drug dealers, often for murder, if someone died from using a drug sold by them, but often it has to be a child, and often the drug has to be the proximate cause of death, e.g. due to an overdose or impurity in the drug. I would presume that Jesse and not Walter supplied the drugs to Jane, that Jane is an adult, and it is not obvious that the drug itself (as opposed to the vomiting due to the manner in which the drugs were used) was the proximate cause of death, so a statute like this might not apply in any case. This brings us to the hard part of the question: Without the pillow Jane rotates on her back and starts to vomit and cough, still sleeping. At first Walter tries to react, running to the other side of the bed to help her, but then he stops and decides to do nothing as she dies. Note that if Walter had moved the pillow without knowing that he was creating a risk, left the room ignorant, and then this happened, surely Walter would have no legal liability for Jane's death. If Walter develops the necessary intent for criminal liability, this probably doesn't happen until he observes that she is starting to choke on her vomit and might die. Even then, he does not intend for Jane to die and probably doesn't even know for certain that she will die from his inaction, so he is probably, at most reckless, if he has a duty to rescue for criminal law purposes. Generally, under both civil and criminal law, there is no duty to rescue, even if you can do so without any risk of harm to yourself. But, there is an exception, at least in civil liability, for a duty to rescue that arises from the fact that you put the person at risk of peril through your affirmative actions. Does this apply here, at all, or in a criminal case? The first question is the exact language of the homicide statute. Some homicide offenses require affirmative acts, while others can arise from acts or omissions where there is a legal duty to act. Every crime requires some voluntary act or omission, and the voluntary act itself was not a crime and perhaps was not even a tort, at the moment it was taken, because Walter did not realize that his act created a risk of harm. He create a peril, but he did so innocently. A pretty standard formulation is that an omission is only a crime when the law creates a legal duty to act, but this is, of course, a question begging standard as it doesn't clarify whether there is a legal duty to act, which is at issue here. As the previous link notes, creation of a peril can give rise to a legal duty to act, but only sometimes. (4) Duty arising from creation of peril. If a person acts culpably to imperil another, he or she has a legal duty to rescue the victim. The cases are split on whether a duty to rescue arises if someone innocently or accidentally imperils another. This case would fall in the category of someone who innocently or accidentally imperils another, in which the cases are split, which which the linked article cites the following authority: Compare Commonwealth v. Cali, 247 Mass. 20, 24-25, 141 N.E. 510, 511 (1923) (defendant under duty to try to extinguish a fire that he accidentally set to his house and thus was guilty of arson when he did not) with King v. Commonwealth, 285 Ky. 654, 659, 148 S.W.2d 1044, 1047 (1941) (defendant who, in lawful defense of a third person, shot and wounded an attacker was under no duty to seek medical attention for the wounded assailant). A commentary that is part of a California standard jury instruction (for involuntary manslaughter, not murder for which this kind of liability is presumably not available) makes the following observation: A legal duty to act may also exist where the defendant's behavior created or substantially increased the risk of harm to the victim, either by creating the dangerous situation or by preventing others from rendering aid. (People v. Oliver (1989) 210 Cal.App.3d 138, 147-148 [258 Cal.Rptr. 138] [defendant had duty to act where she drove victim to her home knowing he was drunk, knowingly allowed him to use her bathroom to ingest additional drugs, and watched him collapse on the floor]; Sea Horse Ranch, Inc. v. Superior Court (1994) 24 Cal.App.4th 446, 456 [30 Cal.Rptr.2d 681] [defendant had duty to prevent horses from running onto adjacent freeway creating risk].) These examples would suggest that an innocently or accidentally created risk is sufficient to create a duty sufficient to support involuntary manslaughter liability for an omission under California law, and would probably lead to involuntary manslaughter liability in the case in the question as well, under California law. New Mexico, unlike California, does not have a standard criminal jury instruction or really definitive section of its criminal code that clearly resolves this question, although the fact that California which uses a murder, voluntary manslaughter, and involuntary manslaughter distinction in the same way that New Mexico does, limits criminal liability for omissions to involuntary manslaughter suggests that New Mexico would as well. The New Mexico case State v. Greenwood, 2012 -NMCA- 017, 271 P.3d 753 (N.M. App. 2011), touches on the issue, suggesting that there may be liability only for involuntary manslaughter (or certain specialized crimes based upon a relationship such as that of a nursing home to a resident of a nursing home) based upon an omission, and that the liability for an omission can only arise when there is a legal duty, but almost implies that only contactual duties are sufficient. It does so at paragraph 35 which says: Importantly, even if the LINKS contract relating to Jared were to have been renewed and to have been in force at the time of Jared's death, we are not convinced that it would be the sole basis or even a controlling factor in determining Defendant's legal responsibility under the Act. Defendant's criminal liability must exist solely based on an omission— a failure to act when she had a legal responsibility to act. See Deborah A. Goodall, Penal Code Section 22.04: A Duty to Care for the Elderly, 35 Baylor L.Rev. 589, 594 (1983) (stating that " authorities have long agreed that before an omission can constitute an offense[,] there must first be a duty to act" ); see also People v. Beardsley, 150 Mich. 206, 113 N.W. 1128, 1129 (1907) (" The law recognizes that under some circumstances the omission of a duty owed by one individual to another, where such omission results in the death of the one to whom the duty is owing, will make the other chargeable with manslaughter. This rule of law is always based upon the proposition that the duty neglected must be a legal duty, and not a mere moral obligation. It must be a duty imposed by law or by contract, and the omission to perform the duty must be the immediate and direct cause of death." (citation omitted)). But, this could be dicta because it was a case where any legal duty would arise under contract rather than for another reason, and as is the case in many smaller states, there is simply no case that has ever been decided in New Mexico which is squarely on point. Under British criminal law, in similar circumstances, a homicide conviction was vacated: R v Khan &amp; Khan (1998) CLR 830, confirmed that there is no separate category of manslaughter by omission unless the omission constitutes a breach of duty to act. The defendants supplied a 15-year-old prostitute with twice the amount of heroin likely to be taken by a regular user. The defendants left her unconscious in the flat, returning the next day to find that she had died of the overdose. Had medical assistance been called, the girl would probably not have died. The unlawful act was supplying the drug but the death was caused by the quantity injected by the victim. The trial judge invited jury to consider liability on the basis of the defendants' failure to summon medical assistance. On appeal, the conviction was quashed because the brothers had not accepted a duty to act before she took the heroin. A dissertation on when criminal liability is imposed for omissions in Scottish law can be found here. New Mexico, whose laws really should govern, has just two homicide statutes: § 30-2-1. Murder A. Murder in the first degree is the killing of one human being by another without lawful justification or excuse, by any of the means with which death may be caused: (1) by any kind of willful, deliberate and premeditated killing; (2) in the commission of or attempt to commit any felony; or (3) by any act greatly dangerous to the lives of others, indicating a depraved mind regardless of human life. Whoever commits murder in the first degree is guilty of a capital felony. B. Unless he is acting upon sufficient provocation, upon a sudden quarrel or in the heat of passion, a person who kills another human being without lawful justification or excuse commits murder in the second degree if in performing the acts which cause the death he knows that such acts create a strong probability of death or great bodily harm to that individual or another. Murder in the second degree is a lesser included offense of the crime of murder in the first degree. Whoever commits murder in the second degree is guilty of a second degree felony resulting in the death of a human being. Walter doesn't qualify for any of these prongs of the statute. § 30-2-3. Manslaughter Manslaughter is the unlawful killing of a human being without malice. A. Voluntary manslaughter consists of manslaughter committed upon a sudden quarrel or in the heat of passion. Whoever commits voluntary manslaughter is guilty of a third degree felony resulting in the death of a human being. B. Involuntary manslaughter consists of manslaughter committed in the commission of an unlawful act not amounting to felony, or in the commission of a lawful act which might produce death in an unlawful manner or without due caution and circumspection. Whoever commits involuntary manslaughter is guilty of a fourth degree felony. Clearly, Walter also does not qualify as guilty of voluntary manslaughter. There is no quarrel or heat of passion. So, either Walter is guilty in New Mexico of involuntary manslaughter, or he is not guilty of homicide at all. New Mexico also has an unusual, and rather merciful "excusable homicide" provision at New Mexico Statutes § 30-2-5, that should also be considered: Homicide is excusable in the following cases: A. when committed by accident or misfortune in doing any lawful act, by lawful means, with usual and ordinary caution and without any unlawful intent; or B. when committed by accident or misfortune in the heat of passion, upon any sudden and sufficient provocation, or upon a sudden combat, if no undue advantage is taken, nor any dangerous weapon used and the killing is not done in a cruel or unusual manner. Arguably, Walter falls under "excusable homicide" part A, as moving the pillow was a lawful act done without unlawful intent and that is what caused the death.
If that which you describe in your comment ( Facebook post as only basis for warrantless search) is, and can be shown, to be the only basis for the search, and there was no evidence of a crime in plain view when they arrived.....then yes, it is likely the search and all evidence acquired from the search would be excludable. As to whether the individual could still be prosecuted, that depends if a case could be built independent of the evidence collected during the search.
The general rule is that in the opening statement, the lawyer may describe what he expects the evidence and testimony to show: We will present Mr Smith, who will tell you that he saw the defendant miles away at the time of the crime But cannot make statements of fact as such. I don't see why this rule would be different for a pro se defendant. In a closing argument, as i understand the rule, the lawyer may and often will say things like "As witness X testified, there was no time to stop" but is not supposed to introduce new alleged facts not supported by the evidence. However, in a closing, a lawyer can and often does draw conclusions from facts supported by testimony. "My client was proved to have been in the next town 20 minutes earleri, so obviously he could not have committed the crime." Again, i don't see any reason why these rules would be different for someone acting pro se.
This is largely congruent with* the doctrine of laches. The basic idea, under common law, is that you can lose rights by failing to assert them. This is generally important for many reasons, but specifically in the case of appeals: The argument should have been brought before the trial court. Justice is not a game, but it's important to recognize that the party trying to raise the argument had an opportunity to do so already. They have given up their right to raise this argument, and extending them the privilege of doing so is (for the following reasons) not good for the system. Courts of appeals are typically not well-equipped to evaluate factual evidence. It is not their area of expertise. Witnesses or evidence may be less available. It's just not practical to try to adjudicate factual issues on appeal, most of the time. If anyone could get an appeal by bringing new factual arguments, then everyone would do that. You'd bring your strongest argument before the district court, and then if that fails, bring the second strongest before the circuit court. That way, you get an extra trial. This is inefficient. Allowing factual arguments on appeal would encourage attorneys and their clients to strategically bring different facts before different courts. This kind of forum-shopping is harmful because it has little to do with who has the stronger overall case, and more to do with who has the better lawyer. * "Congruent with" is not the same as "an instance of"; this rule is not formally an application of laches. It just happens to share the same justification.
Most likely, they chose enough victims to ensure a long prison term while having plenty of additional victims to charge if something went wrong at trial. Plus limiting the number of victims limits the amount of repetitive testimony and evidence the prosecutors had to introduce proving the death of each victim. If you charge with 19 counts when there are 492 victims and something goes wrong at trial, whether you think but can’t prove that the mob paid off a juror or whether you just get an oddball juror that votes to acquit, you can always pick some of the remaining 473 victims to bring charges. The prosecutors could have failed in 24 straight trials for 19 charges of manslaughter and still been able to bring charges a 25th time (though that would have been highly unusual). If you charge a defendant with manslaughter, you have to prove the death of a particular person. So there has to be evidence that Bob Smith went to the club, Bob Smith’s body was recovered and identified, Bob Smith was autopsied and the cause of death was smoke inhalation, etc. That gets repetitive after a time and jurors start thinking of the victims as numbers rather than people. Limiting the number of charges makes it much easier to make the victims seem like distinct humans to the jury. You can show pictures of the victims at trial and jurors can recognize particular individuals not just “1 of 492 dead people”.
There are all manner of reasons that evidence can be excluded at a trial, most of which are set forth in rules of evidence. If the evidence was not admitted on the grounds of relevance and the charge was speeding, I presume that the reason that it was found not be to relevant was that it was not possible from a video to determine how fast someone was driving and there was no dispute in the case over who was driving. If the defendant could have articulated some reason that the video was relevant to those points, perhaps it could have been admitted. But, as if often the case, pro se defendants are usually not articulate enough to set forth a legally relevant reason that evidence should be admitted. Unless the defendant could show that the video showed something allowing a jury to determine whether or not the law was violated, it probably wouldn't be relevant and I can't easily imagine how it would be relevant, but perhaps there was some special facts or circumstances that might show, for example, that the speed gun was actually picking up another vehicle.