It doesn't, but that's a lot to do with the USA being full of violent screwballs.
The WORLD is full of people who react quickly and violently to stupidity. How often have we heard of a rumor about someone doing something bad to a Muslim or to a mosque or a koran causing havoc and riots and murder in Muslim countries? What do you think Russians would do if el presidente there started to say nasty things about a particular news organization (which wouldn't happen since he controls them all or can shut down any he doesn't like). If you're in a position where you have 'followers' who worship you and you tell them so and so is an enemy then odds are someone is going to go after so and so.