I swear I am so sick of people shit!!

Why did my coworker just ask me to take care of an old white couple at the window because I would get along well with them??? She said that I put down black people and get along well with white people when I have very few white friends and I don't even put black people down because I'm fucking black for one, I just complain about our rude ass customers who are a majority black but I treat everyone the fucking same regardless of their fucking race....she said that's what she believes and she clearly ain't changing her mind...I cussed her ass out and got in trouble, she just got told that shouldn't have said that and I got told that I shouldn't cuss at her because it's a professional environment even though she cussed me out before and no one said anything. My coworker said she say anything because she wanna stay out of drama 🙄 and my other coworker didn't think what she said was wrong and thinks I'm just racist towards black people even though she's fucking black herself. It's a fucked up ass perception of me and it's not the first time she's been racist towards me, going as far as saying she thought I had only white friends and no black friends when my friend group is very fucking diverse...like....wtf is wrong with her???