I understand the “normal” white supremacist conspiracy theory is about white people being replaced. But extremely similar conspiracy theories are built around the replacement of black people, In DC this is called “the plan [1]”. Basically racists aren’t particularly creative because racism appeals to the same lizard brain parts of us. I used the term “great replacement” because it’s more broadly known.

[1] https://en.m.wikipedia.org/wiki/The_Plan_(Washington,_D.C.)