if you've got nothing to hide you've got nothing to fear »

Pretty terrifying story of one normal guy’s two year struggle against a false accusation of drug offences. (First part, five are up at the blog at time of writing.)

Closely related is this excellent lecture, don’t talk to the cops, which explains why, if it comes to it, you should always exercise your right to remain silent no matter how innocent you are and and how helpful it might seem to do otherwise. Although in the UK the law has been worryingly reworded to allow adverse inferences to be drawn from silence.