Why should I care if someone is racist unless they are using violence against me? I’m not required to interact with them and I don’t care to. However, if a racist and I share a belief in some fundamental value, I have no problem allying with him to promote that value. I support anyone’s right to be a racist even if I do think they are stupid idiots. I’ve heard of David Duke, only recently, and seen a couple videos of him speaking. I think he does believe his race to be superior but none of what I’ve heard him advocate is directed at using violence against blacks or any other group so I don’t really concern myself with his or any one else’s personal preferences.