What protects civilians from police corruption and lying if there isn&#39;t any video evidence? Can't a police officer arrest someone on the street for anything and just lie about what happened? For example, there are some drugs found near someone walking down the street. An officer just decides to arrest that person and say they were in possession of the item even though then weren't. How would one fight this if there's no video evidence? Is it also possible for police to use DNA as evidence in drug cases such as these? For example, DNA is transferred from your body to the drugs through someone moving it or it falling onto it somehow but you never actually touched it or had possession of it in reality. I would think that DNA alone wouldn't prove this, so there isn't a point to use it as evidence, but I could be wrong, which is why I'm asking.
The answer by @A.fm. isn't wrong, but it also is unduly optimistic. In my experience, in real life, people are more likely to lie when they are under oath than when they are not under oath, and law enforcement officers tend to be particularly good at lying on the stand because they testify frequently in court cases. In almost all places in the United States (and most foreign jurisdictions), in a pure battle of credibility in the eyes of a judge or jury between a law enforcement officer and an individual citizen charged with a crime, the law enforcement officer's account is going to be found to be more credible (beyond a reasonable doubt) about 90% of the time or more, unless you have a majority-minority jury or an outlier extremely liberal judge or the law enforcement officer has a personal involvement in the case (e.g. it involves a family member of the officer). The likelihood that it will be resolved one way or the other does depend significantly on race and social class, however. The credibility imbalance is still great and favors law enforcement, but not as extreme, when it is between an unrelated third-party witness and a law enforcement officer. In the absence of hard evidence or a law enforcement insider witness willing to testify in your favor, it is almost impossible to win a credibility contest in a case like the ones you suggest. One important step an attorney can take, however, is to seek discovery on any prior instance in which the testifying officer has been disciplined for untruthfulness or had his testimony in court found to be untruthful. This will usually be fruitless, but levels the playing field to closer to 50-50 if you get lucky and received such evidence. Such a request also provides a means of collateral attack on a conviction if the law enforcement officer has a history of untruthfulness that wasn't disclosed by the prosecution after such a request is made by a defense lawyer. So, what does protect you? Mostly the desire of the bosses of law enforcement officers (who are ultimately politicians, mostly local politicians in the United States) to see the law enforced in a non-corrupt manner and the fear of a law enforcement officer that he or she might be found to have lied using physical evidence unknown to him at the time (like a secret recording of an interaction). Law enforcement officers usually don't have much to gain from lying (although this equation changes a law when police department can receive assets seized in civil forfeitures that they are involved in) and usually they want people who are "bad guys" to be in jail to protect "good guys" although they aren't always very concerned about the means by which they achieve these ends. Of course, "usually" is a weasel word here and there are many exceptions that crop up in real life (e.g. when police have engaged in misconduct and want to protect themselves from the consequences of that misconduct). The other obvious solution (so common that in certain eras of U.S. history there were travel guides targeted at African-American motorists to help they carry out this approach) is to avoid places with police who have historically been corrupt. The United States has a uniquely bottom heavy law enforcement structure. Something on the order of 95% of law enforcement officers are employed by local governments or are otherwise tightly constricted geographically (e.g. rangers in national or state parks). And, even the small number of state law enforcement officers are heavily concentrated doing traffic enforcement on major state and federal highways. Similarly, lots of federal law enforcement agencies are broken up into geographic divisions some of which are known to be more corrupt than others (e.g. there is more corruption in the border patrol on parts of the border with Mexico than on most of the border with Canada). So, if you want to avoid the risk of encountering bad cops, stay away from places that are known to have bad cops. The solution may seem like a "cop out" (sorry, pun intended), but it is actually a pretty unique feature of the American law enforcement system. Most countries (e.g. the U.K., South Korea, Russia, Japan, Spain, Mexico, France) have a much more centralized law enforcement bureaucracy, which is fine when the people are the top are scrupulously non-corrupt, but which also makes it much easier for the rot of corruption to become geographically widespread and hence unavoidable from the point of view of an individual citizen. In contrast, in the U.S., even in the most corrupt of times (e.g. the Prohibition era), there are almost always many jurisdictions where law enforcement is not corrupt and corrupting the entirely system is much more difficult than in most countries.
Not all illegal things are crimes. Lack of evidence. They are asked to testify, and they say "what I said in my book was a lie". There is no general law against lying, except when under oath. Statute of limitations. Saying "10 years ago I did smoke drugs" means that any offence is no longer prosecutable. Lack of details. Which jurisdiction were they in? When did they commit the act, how many acts? You cannot be arrested for being a "bank robber" or a "murderer". You are charged with "robbing Bank X on 123 Fake Street the Thursday 25 April 2018" or "murdering Jim Thio in January 2017". Otherwise the defendant would have a hard time defending himself (how to prove that you have not killed anyone at any time?) All of the above combined with prosecutorial discretion in the form that any possible prosecutor will most likely determine that bringing charges would be just a waste of time and resources. UPDATE February 2018: Just for the sake of completeness, a reference to the situation of Jacques Cassandri, who did boast about a serious crime(a robbery in a Societe Generale vault in 1976) in a book. Unfortunately for him, he made some kind of mistake/miscalculation and the crime had not yet expired, so he has become an example of someone being prosecuted by confessing a crime in a book.
Criminal charges are filed and prosecuted by the government, on behalf of the public, and there is no requirement for approval or cooperation by the victim. As a policy matter, a DA may decide to not charge a person in case the victim is unwilling (though less so in cases of domestic violence), perhaps because of the widespread impression that the victim has to "press charges" (which indeed they would have to do in the case of private prosecution, which is no longer allowed in the US). The alleged victim's reddit exchanges on the topic are here. An uncooperative victim does not make a good witness, even if they are compelled to testify. The police statement that they cannot pursue an investigation should not be interpreted as a statement of law, it's probably a statement of policy and practicality.
It depends on the nature of the crime, among other things. Under Section 8 of the Police and Criminal Evidence Act 1984 (PACE) the police must provide evidence to a court that a search warrant is necessary to secure and obtain evidence relevant to an ongoing investigation into a crime. If there is evidence that time is of the essence with regards to the evidence at stake (e.g. there is a high probability that the evidence will be destroyed unless it is secured immediately) then the search warrant will be expedited. Once the search warrant has been secured, it will be an operational matter for the police to decide when and how to act on it. They could choose to do a dawn raid, for example, or they could monitor the suspect for a week and then search the property when the suspect is out. Be aware that under Section 18 of PACE, a search warrant is not necessarily required. The police may, in the course of arresting someone for an indictable offence, search the premises without a warrant provided certain criteria are met. Of course, this is predicated on the police having grounds for arrest, and in the vast majority of cases, a search warrant will be obtained.
A fact cannot by itself constitute reasonable suspicion; the word &quot;reasonable&quot; describes not only the relationship between the fact and the possible existence of a crime, but also the officer's knowledge about the fact. The officer must not only sincerely believe the truth of the facts constituting reasonable suspicion, but must also reasonably believe it. I do not know whether a hallucinatory experience may be found reasonable for this purpose; I suspect that it would be a matter of dispute at trial. The first example is perhaps more straightforward, as there are probably a few possible explanations for the officer's failure to notice the turn signal. Still, are they reasonable? If the officer could not see the turn signals because something blocked the line of sight, it would not be reasonable for the officer to conclude that the driver had failed to use the signal. Rather, the officer has no evidence one way or the other, and absence of evidence is not evidence of absence. The question deals in hypotheticals, where we can assume that the officer is sincere. But in a trial, the jury (or judge in a bench trial) cannot do that. They will look at the evidence, including the officer's testimony, and assess the officer's credibility. They will form an opinion about whether the belief was sincere and reasonable before they look at whether the facts, as the officer believed them to be, reasonably indicated that a crime was being committed or was imminent.
You did not commit any crime, but that does not mean you cannot be charged with a crime. Up to the point where you take the item back out of your pocket, a police officer would have probable cause to believe you were attempting to steal the merchandise, and probable cause is all he would need to charge you. At trial, the government would have the burden of proving that you intended to actually steal the item, but it can satisfy that burden merely by showing that your actions were consistent with such an intention. You would have the option of testifying that you planned to pay for the item. From there, it would be up to a jury to decide whether it believes you. If so, you should be acquitted. If not, you would likely be convicted, and your conviction would likely be affirmed on appeal.
The citation could be written but it should be easy to beat. In the circumstance that you describe the accused could just say the he was not driving his car at the time. If the prosecution is a sham with all your friends saying you all saw this thing, then the defendant can bring all of his friends to say that he was at some other place. The benefit to having a cop on the scene is that the cop will get ID and positive identification. The other thing the cop has is expert judgment. If a cop sees unsafe lane movement and writes a ticket, his testimony in court carries more weight than the "it was not unsafe!" testimony of the accused. Keep in mind, getting all of your witnesses to court on the same day, after continuances and other delays, and getting them all to tell the same story to overcome the presumption of innocence is no small feat. All that to say, it's easier with police as witness. There are two mechanisms which could get you where you want to go. Private prosecution and citizen's arrest. Private prosecutions are a part of history but not strictly unavailable at the state level. You could write up some charging documents to see if you can get your target indicted. Citizen's arrest is interesting because the rules are fairly unclear unless governed by a specific statute. There are two necessary parts of citizens arrest and the first part gets the attention. The first part is the detention (arrest). The crimes for which a citizen can legally detain a suspect are likely defined by state statute. The second part is giving testimony about the witnessed crime. Let's assume that you see a felony happen and watch the perp walk into a gas station bathroom. You are prepared to arrest, do part number one, and then call the cops, to do part number two. But while you wait for the guy to come out of the bathroom a cop walks up. You explain the felony and the cop goes into the bathroom and arrests the guy. It's purely witness testimony that led to the arrest and the indictment (physical evidence - let's say there is none) and even the trial. You successfully get the guy indicted and when you show up to testify you tell the story as you witnessed it. Now the accused gets to take the stand. When he takes the stand he says, "it was the other guy." When asked, "what other guy?" He says, "I was in the bathroom and a guy ran in and went into the stall. Then a cop came in and arrested me." Reasonable doubt right there. How much more if it's a bunch of friends ratting on some lone driver? Police need evidence. Prosecutors need evidence. Judges need evidence.
There is a good amount of case law addressing this question going back two centuries. Legally, as soon as you are subject to "excessive force," you are allowed to defend yourself as you would against any assault, even if that force is being used in the course of an otherwise lawful arrest. Furthermore, in some states you are still allowed to resist unlawful arrest. Unfortunately, the matter is no longer as clear as it used to be. (There is a lot of material on this subject; just search for resisting unlawful arrest.) For example, police reflexively invoke a virtual safe harbor by shouting, "Stop resisting!" while battering arrest subjects. Video evidence has uncovered a plethora of examples in which this was done to subjects who were not only not resisting, but even later determined to have been incapable of resisting. If you intend to defend yourself against police, even when justified by law, you need to realize that the system is stacked against you. Police carry the means of escalating to lethal force. So, for example, if you are being beaten but you are potentially able to physically overpower and restrain an officer, you will likely then be met with baton blows or tasers. Since a baton is a deadly weapon, you would be (in theory) justified in shooting an officer attacking you with one. But as soon as any officer shouts "gun!" you will be shot, and most likely killed. Police seem to be given the benefit of the doubt by prosecutors and grand juries when they claim, "I feared for my life." You (even if you survive) will likely have any such claim subject to a full criminal trial. So even though you can legally defend yourself against excessive police force, these days you will almost certainly be unable to in practice.