I don't know with truth, fact or evidence what you should do as your personal value system. That is your subjective problem.
You don't know if we should respect vile racist beliefs? I already said that it was absurd to claim all beliefs should be respected, you challenged that, and ignored the evidence I offered, and now you have backtracked so far you're unwilling to say whether you'd respect the beliefs of the KKK?
Best of all is you are now claiming this is my subjective problem, after you claimed all beliefs are fundamentally the same, which is absurd btw. The belief the world is flat, is not fundamentally the same as the belief that all living things evolved, that is manifest, and it is because one contradicts objective evidence, and the other is based on a massive weight of objective evidence.
Try the Matrix analogy, I find when people start denying there is such a thing as an objective fact, an unevidenced unfalsifiable fantasy that all life is a delusion is often where they default to.
So the KKK, should we respect their beliefs?