Americans really really need to be less paranoid and more capable of tolerating minor discomfort in public. Not everyone is a pervert/rapist/strangler/fiend. In fact, very few people are. Treating every violation of normal order as though it is a threat is why people are getting shot for turning around in a stranger's driveway. This happens within the frameworks of basically every ideology present in American culture. It is an American illness. If your vision of the world doesn't have room for saying "I'm sure it's nothing" then you really gotta work some shit out.