"The Police Can and Do Lie
The supreme court has upheld that the police can lie to you for any reason. The police cannot lie in court, or in official documents, (although some do). If you ask a plain-clothes police officer if they are the police, they can lie and say that they are not (this is one of the most common misunderstandings by citizens if you ask an undercover cop if they are the police, they can legally say no, and claim to be something else). In fact an undercover police officer can take illegal drugs with you to "prove" they aren't police. The police can lie about evidence they have about you (they can fabricate ''fake'' evidence to convince you to confess, for example). Fake evidence cannot be used in court, but if it makes you confess, it no longer matters. Never confess - it does not help you. "