Isn't using the term "Neo Nazi" a bit too harsh?

Are people really aware of what the Nazis did? Do they really think some in the Republican party are as bad or worse? Isn't it a huge insult to the millions of people who died at the hands of and defeating the Nazis in WWII. Does it not make their sacrafices trivial?
Update: Shilo: Read this and tell me what you think "Neo Nazi" means:
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