Show me when Chris Rock singled out a white member out of the audience and yelled "Look! He's a cracker! He's a cracker! He's a cracker! Get him out of here! I hope a Brother busts a cap in your ass when you get outside! Get this honky out of here!"
Racist dialogue comes in a variety of forms. Does it have to match Kramer's to be offensive? Slurs against CAucasians in general are as obnoxious as slurs against blacks in general. To me it doesn't matter if Chris Rock and his ilk never singled out a white person. Their overall tone and message about "Caucis" has the same effect to me.
"We need a new black leader. Louis Farrakhan hatres the Jews. I don't have time to discriminate, I just hate all white people!" - Chris Rock