rac·ism Pronunciation Key (rszm)
n.
1. The belief that race accounts for differences in human character or ability and that a particular race is superior to others.
2. Discrimination or prejudice based on race.

There is nothing in the definition about power. There is nothing in the definition about opression. What most of you are talking about when you say that power is a prerequisite to racism is INSTITUTIONAL racism. By the very definition of the word, blacks can be racist. Whites can be racist. Hispanics, Native Americans and Australian Aboriginies can be racist. Koreans can be racist. Eskimos can be racist. If a white man calls someone a "slope" he is being racist. If a black man calls someone "caveboy" he is being a racist. If you say black people can't be racist, then you are either inventing your own definition of the word "racism", or you don't understand the actual definition of the word. A dictionary may be helpful in alleviating this deficiency.