When is Nazism Okay?

Andrew McCarthy writes a piece for National Review, titled "Nazis for Me, but Not for Thee. Why shouldn’t socialized medicine prompt comparisons to National Socialism?"

This piece examines the left's hypocritical tendancy regarding fascism.

National Socialism is banned from the Right’s case against socialism, but is somehow acceptable when leftists use it as a smear or when the Left’s nuanced geniuses, after their very thoughtful consideration, decide its invocation is suitable for mature audiences? I don’t think so.