Well, My opinion of it is that I am totally into race play, but consensually. I think it's stupid to try and ignore race in society and I don't think there is anything wrong with race play if it's consensual. IMO, because it's taboo, it's a great way to facilitate a power exchange in a real way as it works very well with humiliation and degredation play.
But, I do draw the line when it's less about the humbling of a person and more about a deeper issue. For example, I too have met a lot of guys who want to serve a Black Domme, and that's fine if they have a healthy appreciation for My persuasion, but when they overly fetishize My race, I don't engage because I am not a fetish. Also, when guys want to be degraded so much that they want you to do it to everyone who is of their race because they truely feel it is inferior for whatever reason... that's where it get's uncomfortable.
I would be interested in hearing from others on the subject.
Don't be shy!