I’ve never even seen one in person. The only way I know they exist is from the not so trustable MSM.
In a lot of cases, “white supremacy” is a dog whistle word for “the success of the culture that happens to accompany centrist to conservative white people.”
I think white LEFTIES have every reason to be ashamed of how they are wearing their skin. The rest of us, not nearly so much.
And have pushed, and keep on pushing, for a generalization of this. Again I say. Everybody who envies the white privilege, simply be a redneck. Whatever your color is. Problem solved!