Not categorically. I've had the displeasure of meeting a holocaust denier that was pretty into Occupy shit, anti-corporatism, and communal living (I think the common thread there was the "Bankers are Jewish" stereotype. We're talking about people with critical thinking deficiencies, consistency is not a given...)
Well, he was definitely anti-Semitic. I'd say that at least in the strictest sense he was a Nazi apologist, as he was also a holocaust denier (standard "it's all exaggerated" rhetoric). I don't think he bought into the politics of the Nazis, but I would be a little surprised if he was actually aware of that sort of thing in the first place...
