I'm going to back this up in so much as I have seen this happen in Houston, as far back as the early 90s. A bar will open, perhaps their DJ spins hip-hop, and a primarily African American clientele "discovers" the place. Management freaks out and either cracks down on the door policy or bans hip-hop so that portion of the clientele doesn't come back.

It sucks, and it is wrong.

Also, this is not every bar or club in the city. There are a lot of spots with a multi-racial clientele in Houston that have been rolling along for years (some of my friends bartend at them), but if you're into the "high end" clubs/lounges and that sort of thing then you will definitely run into this crap. But then, I've always thought of those places as pretty low class.