The purpose of this odd definition is to make it impossible for black people to be racist.
Since only whites have power in the relaionship, only they can be guilty of this worst of all sins.
Couple more points come to mind:
She presents no evidence that racism is this dominating factor in the lives of black Americans, she simply asserts it.
She’s pretty clearly got a good deal more European than African ancestry herself.
I think her definition, and the dictionary’s, of the word is wrong. I’d prefer it to mean hatred of members of other races, which is a secondary definition in some but not all dictionaries.