Without incurring kneejerk indignation (or one of Daveman's dancing Hitlers), is it racist, or indeed, morally repugnant to (within the law) go out of your way to restrict yourself from interacting with people who don't belong to your race?
Lets go with this for a second. You enter a room full of white people because you knew that room would be nothing but white people. In this particular room though, pretty much all of them are assholes to you.
Then what do you do? Those whites you seeked out are assholes and you only want to be around whites. Then what do you do?