I think it's more like, people feel more comfortable around groups that of the same culture / social class. I'd certainly feel more comfortable around middle-cl

I think it's more like, people feel more comfortable around groups that of the same culture / social class. I'd certainly feel more comfortable around middle-class college educated black people than I would around some hooligans from Glasgow despite being of Scottish extraction. Unfortunately in the US we're pretty segregated by race, so it's often an effective proxy for culture / class.