Essentially, "white supremacism" in the US today is a political ghost.
What saddens me the most, I think, is the failure of the American Left - the children of Martin Luther King, Jr. - to accept their own success.
The US, today, is entirely different from when Martin Luther King stood on the Mall in Washington, DC, in 1963.
Instead of embracing ethnic equality, we seem to be agitating ethnic resentments for partisan political reasons or reasons having to do with whatever consolation that comes from personal virtue signaling.
This social-political trend is not coming from the political right-wing so much as it is coming from the racialized American Left.
I come out of the American Left, but the US Left is doing itself and the country a terrible disservice by continuing to agitate racial issues for political purposes.
It is pure poison.