What are the alleged perpetrators convicted of after being caught by a paedophile hunter? Paedophile hunting seems to be on the rise (see e.g.: Paedophile hunters: Should police be working with vigilantes?, BBC News, 9 December 2016), and I'm surprised that it seems to lead to convictions (e.g.: Paedophile jailed after vigilantes set Bluewater trap, BBC News 21 October 2016). While what they're attempting might be abhorrent, it seems to me that technically all they've actually done is have a sexually explicit conversation with another consenting adult. What are they being convicted of?
Actual sex with a minor is an offence. Under the Criminal Attempts Act 1981, doing something "which is more than merely preparatory to the commission of the offence" is attempting to commit the offense, and is itself an offence. They have attempted the offence of having sex with a minor, although they didn't succeed because unbeknownst to them the other party was not a minor. There is some variability in whether it matters that there is no actual minor involved. In that specific instance the offence he was charged with was arranging the commission of a child sex offence (Sexual Offences Act 2003 §14), where one "intentionally arranges or facilitates something that he intends to do". Since he pleaded guilty, we won't find out how an appellate court would interpret 14(1)(b) ("doing it will involve the commission of an offence").
In US law, there was, as far as the question indicates, no probable cause to search her phone at all, Therefore (unless there is some cause not mentioned in the question), any such search is illegal, and any evidence found in such a search, or that is found as an indirect result of such a search (pointers toward it are found in the search, and followed) would not be admissible in any criminal case against Alice. In the case of Bob, if his friends and family approach the police or other authority with a vague suspicion that Bob might be involved in the creation of illegal content That will probably not constitute probable cause for an arrest of Bob or a search warrant for his phone. Unless the accusation does prove to constitute probable cause, any evidence found during such a search would not be admissible against Bob in a criminal case. In practice, most US police would not undertake either search without better evidence than is described in the question. But some police will overstep the lines, which is what the US exclusionary rule is for. Legal procedure does not as far as I know make a distinction between "exploratory" and "confirmatory" evidence. Instead, evidence is either admissible or not. The rules for when evidence is admissible are quite complex, and vary by jurisdiction. Some of them are more traditional than logical, and some of them are addressed to particular problems that have arisen in particular circumstances. But the US Fourth Amendment protections against unreasonable searches, and the requirement of probable cause before search or arrest warrants are issued, serves some of the same purpose. Other countries have different rules, but many of them restrict the authorities to some extent from making arbitrary searches with no initial evidence. Response to the Revised Question As the question has been edited, there seems to be fairly clear probable cause to search Alice's phone, and if clear evidence of "illegal pornographic content" presumably actually child pornography, as no other kind is illegal simply to posses) is found, she can be brought to trial and perhaps convicted. The mere "suspicion" of Alice's "friends and relatives" would add little and mi8ght well not even be admissible. The facts, if any, on which those suspicions are based might be admissible, one cannot tell from the summary in the question. The case against Bob, however, remains weak. Indeed there still seems to be no probable cause either to arrest Bob nor to se3arch his phone, and the results of any search that was done would not be admissible. Probably none would be done without more evidence. The OP wrote: Thus, although the situation looks grim for both, since the evidence against Bob is confirmatory, it might be considered stronger. Not so, the case against Bob is weaker, indeed so weak that an arrest would be unlikely, and if one were made, the case would likely be dismissed before going to trial, assuming no more evidence than was included inn the question. The evidence prior to the search seems to consist only of vague suspicion not supported by any actual evidence, and so there is nothing to confirm, and no valid search would occur. That suspicion of Bob came before the search, and the search is thus "confirmatory" is not relevant. The question is, what evidence against each defendant is admissible, and does the totality of the admissible evidence amount to "proof beyond a reasonable doubt" no matter what order it was discovered in, or what idea was in the minds of the investigators, provided that they were acting lawfully so that their findings are admissible.
There is no direct equivalent to the American-style plea bargain, but there are some similar procedures: Basis of Plea A defendant can offer a written guilty plea to a lesser offence with the same (or closely similar) facts as the offence charged, which has to be accepted by the court to take affect. The prosecutor must consult with and seek the views of all victims, and if the plea is accepted it must not be misleading or untrue. The Attorney General's Guidance provides more information on the process and the detailed requirements (which are too long to repoduce here). Assisting Offenders The Serious Organised Crime and Police Act 2005 offer the option for a &quot;minor-player&quot; defendant to assist the prosecution and/or police by providing information to secure convictions of the principle offenders in return for immunity from prosecution (section 71), a restricted use undertaking (a version of immunity) (section 72) or a reduced sentence (section 73). Immunity requires full and frank disclosure of all previous offending (referred to as &quot;cleansing&quot;), but for whatever reason the defendant does not &quot;cleanse&quot; they may still be eligible for a lesser sentence. Either way the assistance - either as evidence at trial or as intelligence given in confidence - should be substantial and verifiable to be eligible. Statistics There is, as far as I can, no publicly available detailed statistics on these procedures, presumably the reason is that vast majority of the former cases go unreported and, despite some being public, there is a real risk of retribution to the informant in the latter.
If I remember the case correctly, he didn't make his home look uninhabited (that is nobody is living there) but as if the inhabitants had left (gone shopping etc.) to make it look attractive to burglars. He then waited inside, armed with a gun, with the intent of shooting any burglars that might arrive. He shot the first burglar in the legs, and then proceeded to kill the unarmed and now defenseless burglar, who was lying injured on the ground and was in no position anymore to hurt him. He then did the same with a second burglar, shooting her in the legs, then shooting her multiple times, and when he found she was still alive, he shot her point blank in the face while she was lying on the ground. You are asking the wrong questions. You are asking "is it illegal to remove a truck". It's not. What is illegal is to intentionally create a situation where you shoot people and try to claim "self defence". It can very well be argued that by luring burglars into your home with the intent to kill them, they are not actually illegal in that home, because you wanted them to be there. You can do many things that are each completely innocent but add up to a crime. Actually, for everyone interested, I posted a question maybe last week or the week before whether you can be convicted for both first degree murder and second degree murder for killing a person, and it was exactly this case that inspired the question. What should he have done? If he hadn't lured the burglars in, I believe the case would have still been a double murder, since he killed both unarmed teenagers when they were absolutely no threat. It might not have been first degree murder since it would not have been premeditated. But he intentionally lured them in, making it premeditated (first degree) murder. If he had only injured them, the fact that he lured them in could very likely have made this an assault. You asked: "Now that the burglars are in his house, what should he have done? " Well, he got himself into a dangerous situation. Remember, he was convicted for premeditated murder. So just before he shot the girl in the head, he should have instead put the gun away and called police and an ambulance. It would have been one murder instead of two. Just before he shot the boy, he should have put the gun away and called police and an ambulance. It would have been just attempted murder. When he heard the first person entering, he should have called the police and waited. When the burglar came in sight, he should not have shot and injured him. It's a similar question to "if I try a bank robbery and there is an armed guard, what should I do". The only legal thing to do is to drop your weapon and wait to be arrested. If an armed burglar had appeared instead of two unarmed teens, well, he would have put himself into a dangerous situation. Just as the burglar would have no right to shoot even if a home owner points a weapon at him, he had no right to shoot, no right to self defense, since he had intentionally created the situation. Tough shit. That's what you may get if you plan a murder. Responding to some comments: @J.Chang Are you being serious? You are not allowed to make your house inviting to burglars, while waiting inside with the intent of killing them. Self defense only applies when a reasonable person would believe they are in danger. Reasonable persons don't think that a burglar comes in with the intent of blowing themselves up and taking the home owner with them. And no, you don't get to "assume the worst". Not when the worst is something no reasonable person would expect. Thanks to Dale for pointing out that even for soldiers in a war situation, where different rules apply, deliberately killing a helpless enemy combatant is murder.
Desuetude is the wrong concept. Desuetude relates to laws as a whole falling out of use; it doesn’t relate to individual cases. There is no question that the UK actively enforces their bail laws so they are not falling out of use. There is a statute of limitations that applies to non-major crimes within which the state must initiate prosecution. However, in this case the prosecution for bail violation has been initiated and Mr Assange is “on the run” so this is not relevant. Neither is the fact that the original charges that led to his arrest has been dropped- he is wanted for escaping lawful custody under English law for which the penalty is pretty stiff. I will also venture an opinion that the case against him is as open and shut as it comes. TL;DR When he dies.
There was a case like that in 2010 in germany tl;dr synopsis of the German article: The police raided the private home of an alleged member of a criminal gang. This was performed as a no-knock raid. The police officers did not announce themselves as such when they started to break open the door. The suspect had reason to believe that a rival gang was planning an attempt on his life. So the suspect believed that the people trying to break into his home were actually members of said gang trying to murder him. The suspect used a firearm to shoot at the intruders through the door, lethally injuring a police officer. When the police officers then identified themselves as such, the suspect surrendered immediately. A court later ruled that killing the police officer was self-defense, because they were reasonably convinced that the defendant was unaware that he was dealing with police officers, believed to be in a situation where his life was in danger and where lethal violence was the only way to save his life. Here is the verdict. [In German, of course]
Would any offence be committed for: Having this on your person? Buying or selling this? Leaving it around for people to plug in to a computer? In the abstract, I don't think that this conduct would violate either Section 36 of the U.K. law or U.S. law, although, obviously, purposefully destroying a computer itself (i.e. actually using the device without the consent of the owner of the computer) would violate many U.K. laws and would also violate many U.S. laws at both the state and federal level. I also don't think that possession or buying or selling this product would be a crime absent some intent that it be used illegally, in which case there might be an "attempt" to commit a crime offense, or an offense that would make one part of a conspiracy to commit a crime. In the "leaving it around" example, there is arguably an intent to use it to harm another improperly, although the phrasing is ambivalent. While many statutes in the U.S. criminalize possession of burglary tools, or drug paraphernalia, sometimes with an associated intent element (although even these crimes often have an express or judicially implied intent to use element), I'm not aware of any statute that criminalize possession of tools for malicious destruction of property. So, if the tools aren't possessed or used in a manner intended as a step in the facilitation of a crime, I don't think that any law is violated. So far as I know, the U.S. does not have a counterpart to Section 37 of the British statute cited above (it isn't a terribly easy thing to search for to definitively rule out the existence of such a law because federal law has many uncodified crimes in unexpected statutes and there are many sets of state criminal statutes, not all of which are codified either). The example giving in the comments by @gnasher729 of possession of a hammer which could be used to do the same things that this object could be used to do is instructive. Arguably, this USB-like tool is more specifically targeted at malicious conduct. But, for example, when I used to work as a radio news reporter, we had a machine that was basically a high powered magnet that was specifically designed to destroy all information on magnetic media. This was, in part, so that it could be reused, but it was also so that confidential interviews wouldn't fall into the wrong hands once they were no longer needed, in much the way that one might shred paper documents. It isn't so implausible to think that a device like this one might be necessary for individuals or firms with national defense secrets embedded in their hardware and software to have on hand in order to destroy a sensitive computer in order to prevent a security breach, if necessary. In a case like that, leaving one of these devices around the office unlabeled might be negligent, but wouldn't have the intent necessary to be an intended crime. And, it is hard to imagine that the device itself, which seems pretty simple, would itself involve any technology that is a national security secret, so it probably wouldn't violate export control laws. Of course, possession, purchase or sale of such a specialized device, or leaving it around unlabeled would certainly be powerful evidence of an intent to use the device in a wrongful manner, and hence, of an attempt to commit a crime. Indeed, possession of such a device or purchase of one might very well be sufficient to establish probable cause to seize the device and arrest the person holding it on charges of an attempt to destroy a computer. But, this device would be merely powerful evidence of an intent to commit a crime, rather than something that is a crime to commit in and of itself. There are no international laws that govern this kind of thing. The only international laws applicable to individuals pertain to war crimes and nuclear and chemical weapons. Even then, most international laws direct member nations to adopt domestic laws on the subject rather than being self-executing.
A private venue normally has discretion over who may attend their premises, as long as it is not because of membership in a protected class under anti-discrimination law. Note that the communication, as quoted, did not say that the banned person was a threat, but only that one of the performers felt uncomfortable. I do not think that the banned person has any legal recourse, unless they can plausibly assert that this is a case of unlawful discrimination, which the question does not suggest.