I'd say classist. I can't stand ghetto ass fucking wal mart white people any more than I can stand ghetto ass wal mart black people.
And the point is, if we were "racist", we'd prejudge that guy on his race and not how he acts, so him acting white would have no relevance. But nobody does that. Black people who act like "us" are accepted. We exclude weirdo chinese people and turban-wearing sand American Inventors too, doesn't mean we hate black people. We hate people who act so differently from us that we can't relate. It's not racism, it's classism or culturism, as you say.
Anything wrong with that? I don't know. It's not good to arbitrarily not like people, but there are people I just don't want to be around if I can avoid it. Am I a bad person?