"White Supremacy" is a dog-whistle for European culture.

They want to destroy post-Enlightenment civilization as we know it. So yes, Europeans do need to "stick together" if they want the way of life that their ancestors invented to continue for their children. I'm happy to have others along for the ride, but I'm not going to rely on them. And sure as fuck I'm not going to bow out of the fight because I'm worried about "optics" or some bullshit about how White people are bad or something.