There are two points I want to address here: first, let's be clear that if you commit a crime just because somebody asks you to, it's probably better if the police have you on their radar.
Second: Let's not forget what you were originally complaining about. "The fact that they were setting a trap for him" is what you said.
But it's not really the same sort of trap, is it? In one scenario, you think the police are tricking somebody into committing a crime, so they can be arrested. Sure, that's a valid and interesting discussion to have. But in the other scenario, you're complaining that somebody who has ALREADY committed a crime, and confessed to it on the phone, with no duress, is being tricked into being arrested. That's a very different situation, and I'd be very interested to know why you think that this situation in particular is objectionable. The kid committed a crime; he confessed to it freely. The police got busy catching him; isn't that exactly what you think they should be doing? He's not an innocent person being tricked into a criminal act.
