Of course, I think it's also a moot point. Just because the Nazis were ____-wing, doesn't mean ____-wing is evil (insert right or left into the blank, it doesn't matter for my argument which you chose.) The Nazi take on that wing would be evil, but not the wing itself.
So if the Nazis were left wing, who cares? That doesn't mean all lefties are nazis, just like, if the Nazis are right wing, it doesn't make all righties Nazis.