If you truly believe that your race is superior to others, then you need not state this fact to exhibit the qualities of a racist. It will come out loud in clear in the repeated use of code language, racial slurs, off-color jokes, etc.

If your first impulse upon meeting a black person who is accomplished, but you otherwise disagree with, is to make jokes about him that essentially paints him as "another nigger" (i.e. fried chicken, CP time, grape soda, etc), then its obvious that you feel yourself "better" than him and need to put him in his place.

I see you doing this all time, so therefore I'm going to call you on it -- You're a racist.