No major portion of any demographic is asking for the destruction of white people. No, not even blacks or jews.

As with everything, most people are normies. Most black people support BLM not because they think white people should be exterminated, but because they think that "black people are important, and are being treated callously & racially by society as a whole".

The Black National Socialist movement of BLM is pushing alluring rhetoric to people who don't really understand what they actually represent.