One thing I discovered in my conversations with Paul Vogel is that they prefer to be called "white separatists". I think we can safely use that terminology as well, because it's more accurate.
<POV> If they think that "white supremacist" is a pejorative insult, whereas "white separatist" is a delightful explanation of their terribly enlightened ideals, well, the joke is on them. They still sound like morons to me. </POV>
--Jimbo