Also, I'd like to add something to Redundant's post.

"The black community did that by starting to use the offensive word “nigger” in a positive manner, thus making it lose its negative power. "

And thus, not being black and using that word the same way black people would, instead of deminishing them and carrying on the oppression, is in fact the opposite : it's demonstrating the will to be a part of that culture/community, identifying yourself as being a part of the same social group, even if you do not share the same skin color. It's breaking barriers.

That's how language and social acceptance work.

Edit :

@Zelda

"[...] As long as you recognise that you only think that because of your racial bias then I can't see how anyone can think you're in the wrong."

I don't think that's a thing tho, once you've uncovered your bias you're not subject to it anymore. I've never heard/read anyone saying "I think all asian people are clever, and I know for a fact that's wrong, but I think they are". It's all about ignorance and social environment.