TheChandler He didnt call her racist because she was white. He called her racist because he felt like she was being racist. Black people are racist to other black people, whites to other whites etc.
Black people are very racist to one another in some parts of the world, and actually have class systems based on who's light and who's darker. This is equally as deplorable.
As for you asking me for evidence - I wont be rude and copy and past the dictionary's definition of "racist", but as we are educated anglophiles, I think understanding the meaning of the word and applying it appropriately is all the evidence needed here.
I had a white neighbor who was obsessed with having mixed raced grandchildren and would say "luke don't you dare bring a boring white girl home do you hear me I want one of those cute brown babies"
Shes clearly being racist to her own race by calling that poor little child "a boring white girl" and by presuming that white babies aren't "cute"
So as I said, there is no evidence he called her racist because she was white, she brought up slavery because he was black - that's racist. Just because he said the actual word racist doesnt mean he's being racist. I'm calling this lady racist, does that make me and everyone who accuses her of being racist a racist too? Was the American Civil Rights movement a racist movement because blacks said enough is enough? Was WW2 racist because the world said no hitler, killing jews is wrong
So why why why why why is someone saying hey, don't be racist wrong in any other context. This is what i mean when i say racism towards colored people is sometimes skimmed over and over analysed so people can avoid putting their hands up and saying oh look - something horrid just happened there. Is not a match. We aren't scoring points.