Both is kinda true. Yes, a poor black man will be worse off than a poor white man and a middle-class black man will be worse off than a middle-class white man and so on.

But a poor white man will be worse off than a middle-class black man and a rich white man will be better off than a middle-class white man.

That’s what intersectionality means: All these things stack together instead of wiping eachother out.

If intersectionality wasn’t a thing, then any black man will always have less privilege than any white man, no matter any other circumstances. And that’s obviously crap, considering that clearly someone like Barak Obama or Will Smith has much more social privilege than any random white homeless guy.