Damien

This is America at the moment though. People believe the other side are actively evil and when you believe that and successfully dehumanise people to the point they're nothing more a caricature of evil then stuff like this can happen. Even after yesterday it isn't hard to find relatively prominent Republican commentators dismissing this or saying it's a false flag from the Democrats, in their world they simply cannot fathom that anyone on the right might be a bit mad and that maybe the Democrats are not just pure evil.

That's a minority though, the kind of people who've spent years subsumed in hateful communities on Twitter/Facebook/Internet and have completely lost any rationality or perspective.