Haha There is some truth to it. You hit the nail on the head, I think. The system likes us divided here. It keeps us distracted from the fact that there is little difference between the various faces of the ruling class. The show us the worst of the the worst and some, not insignificant, number of people buy into it and overreact by acting just as terrible. You guys on the outside just to get treated to the spectacle plus the wars and economic crashes and stuff. 

We aren't all shooting each other and I have seen few political disagreements turn violent. I live in a very racially mixed region and I have a touch of Mexican in my heritage  (you wouldn't be able to tell by looking at me, though) and I have personally seen very little serious racism against any group. There are plenty of assholes, morons, and crazy people floating around but I assume the same is true anywhere.