Because too many people have bought the lie that black people can't be racist.
And ironically it's a lot of young, white liberal women that have bought into that line of bull.
Racism creates more racism. I don't care if you are white, black, Asian, Mexican or whatever. Not only can you be racist, but your racism tends to lead to more racism. Meaning a black person that spews racist stuff about white people can cause more racism like a wild fire. I think if everyone can knock the shit off we would all be a lot better for it.