If you see a drunk girl getting gang banged are you a participant, the videographer, a silent witness, or the guy with the balls to say something or call the police?
Consciousness is a bitch. You either accept things the way they are while knowing an injustice is being done, or you step up to the plate and make a difference in a tiny way.
Think about it this way. You had the choice to say something, or even go to another restaurant that doesn’t disrespect other people. The black people can’t just go to another restaurant, because they will find racist reactions in SOME people because they will always have brown skin.