I Don't Understand

Apparently, there is a Jewish group calling for Lou Dobbs to be fired because he likened those who create propaganda to support illegal immigrants to the same sort of way the Nazis worked.

I guess I just don't see why that's offensive. The Nazis were real and a huge part of history and making comparisons to them doesn't seem all that new or well, offensive. It's not like he was saying they did a good thing.

You can read the article here, and explain this absurd situation to me.

(PS I don't really care about Lou Dobbs, this story just caught my eye)