Dressing well, being polite, and liking individualism is apparently white supremacy, along with almost literally everything else. Mozart is racist, cars are racist, milk is racist, education is racist, smiling is SUPER racist.
It's not about the supremacy, it's about the culture. Lefties hate western culture, so they mask their own racism for white people by calling it "white supremacy".
I don't know who needed to hear this, but it just clicked for me all of a sudden: replace "white supremacy" with "white culture" and you lift the mask.
And even white culture isn't really about the white race, but instead about the culture that developed in certain geographic locations where white people were predominant. There are plenty of populations of white people who have a culture completely distinct from what is referred to as "white culture"