jamie found this essay by Bruce Schneier, The War on the Unexpected. (It originally appeared in Wired but this version has all the links.) "We've opened up a new front on the war on terror. It's an attack on the unique, the unorthodox, the unexpected; it's a war on different. If you act different, you might find yourself investigated, questioned, and even arrested — even if you did nothing wrong, and had no intention of doing anything wrong. The problem is a combination of citizen informants and a CYA attitude among police that results in a knee-jerk escalation of reported threats... After someone reports a 'terrorist threat,' the whole system is biased towards escalation and CYA instead of a more realistic threat assessment... If you ask amateurs to act as front-line security personnel, you shouldn't be surprised when you get amateur security."