Still, there does seem to be some dispute in the black community about exactly when it's okay for whites -- or even blacks -- to use the word:
Hmmm... Maybe it will be better for us whites to wait until you blacks have made up your minds. I don't need any more problems than the ones I've already got.
Chris Rock's bit is a lot funnier when you hear his setup and the rest of the act.
...hopefully, but not necessarily, in separate cells.