jemele don't know dictionary wrote:
white supremacy ► The ideology which holds that the white race is superior to all others.
Definition of WHITE SUPREMACIST - Merriam-Webster
a person who believes that the white race is inherently superior to other races and that white people should have control over people of other races.
Don't confuse it with: racism, white nationalism, etc.
Very different causation and effect sequences.
I fully agree. Similarly, Black South Africans are explicitly racist against others, but it would be difficult to claim they are "black supremacists" in thinking they are inherently superior and should control other races.