Among the whites in the United States, it is only the reactionary ruling circles who oppress the Negro people. They can in no way represent the workers, farmers, revolutionary intellectuals and other enlightened persons who comprise the overwhelming majority of the white people.
That quote is from the Little Red Book.
That's the sort of thing I am looking for. Is there more up-to-date Chinese Thought on intersectionality or are they totally materialist?
There's the baizuo concept, but I understand that's more troll culture than theory: https://en.wikipedia.org/wiki/Baizuo