I think that may be because, at least in America, ethnic minorities are over represented in crime and the "under class" in a way that isn't true of gay people.

I think that may be because, at least in America, ethnic minorities are over represented in crime and the "under class" in a way that isn't true of gay people. I'm not saying its right to draw the conclusion "black people are overrepresented in crime therefore black people/culture must be bad", but I think it is human nature to do so. Going further, if an individual has had a negative experience with a person of another race (e.g. being mugged, living next to an addict, etc.) then there is also likely to be an emotional component that is difficult to overcome. Again, I want to emphasize that I'm not saying that this is right, just that it's human nature.