You might want to google "human race". Genetically, we're all one race.

As for who to blame, I'll stick with Du Bois, King, and Malcolm X and blame capitalism.

You may find this interesting: "Two Kinds of Anti-racists: Identitarian and Universalist"

https://medium.com/a-universalist-in-an-identitarian-age/two-kinds-of-anti-racists-identitarian-and-universalist-e561251ff6c4