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 [Cover Your Ass] attitude among police that results in a knee-jerk escalation of reported threats.

Bruce Schneier, The War on the Unexpected