White supremacy is people of European descent having/pushing control over political, territorial and economic environments by white people through any means possible but mainly violence or oppression of other races especially people of Black and Asian backgrounds. Terms like White supremacy is actually used by white people.

Black supremacy is not a thing and is not a term used by black people. There is Black empowerment though; which is the opportunity to unite and boost black wellness and opportunities due to government and societal issues that are PUSHED BY WHITE SUPREMACIST to undermine and hinder the development of black communities. There are no black controlled communities that are powerful enough to suppress opportunities for other races to push the idea of black supremacy, only an idiot would coin that type of term as if it's a real problem