I see your point sirs, but I'm not yet prepared to let the Wookiee win. The bystander effect is a genuine social psychological phenomenon and is probably more widespread, even in the post-9/11 world than you realize. Moreover, I don't see this as anything like turning in your neighbor for politically disagreeing. Even if someone calls in their neighbor for no reason other than being Middle Eastern, the police are not going to set up a stakeout. The "informants" can be as paranoid as they want to be, but the police by law will keep a level head. Overreaching on their part would send them on false trails anyway. Again, I don't see this as any different than a neighborhood watch.