[KingMob]

I think the key point you (and many people) are missing is understanding how much racist behavior is unconscious. I'm engaged to a woman who's half-black, and I still occasionally say something slightly racist by accident.

Check out the Implicit Association Test (https://en.wikipedia.org/wiki/Implicit-association_test) for an introduction to this line of research. You can still be doing/saying racist things while meaning well. The only solution is self-awareness and humility.