Intersectionality:
Racism necessarily co-exists with sexism, classism, able-ism.
So if you can accuse a person of any ONE of those, you can accuse them of the others, too.
Isn’t that nice..?
“one stop” hating.
It also works in reverse, as a means of uniting anyone who feels victimized by someone in so called power. I ran into it 20 years ago when I was a grad student at Queens College NY.