Paul Mooney, an acclaimed American stand up comedian and friend to Richard Pryor, says in this clip that
"A black person can't be racist by definition, because we don't have any control over other people's lives. I can't tell you what neighbourhood to live in. I can't tell you what school to go to. I can't tell you you're a second-class citizen. I can't tell you that you can't vote."
Of course, neither can almost all white people, so I guess almost all white people can't be racist by definition, either?
Mooney is clearly someone who has experienced a lot of racism in his life, and it has affected his character. However, I think the idea that you must have "control over other people's lives" in order to be racist is ridiculous.
By that logic, a lower-class, unemployed white person, without any influence in the world, who screams "n
igger" at a black passer-by is not behaving in a racist fashion.