In the latest New Scientist: A long-awaited rough draft of the Neanderthal genome has proved what was long-suspected: Homo sapiens interbred with Neanderthals. Our own DNA contains clear evidence of this. The genome of humans today is roughly 1-4% Neanderthal, a species not generally considered "human". This holds true for all non-Africans. It turns out that Africans are actually pure homo sapiens.
White supremacists should rethink their ideas about Africans being less "human" or less "racially pure" than themselves. More likely they will attempt to reinvent Neanderthals as some kind of superior species, despite the fact that they went out of evolution.