That's an old trick, to paint an entire people with a broad brush. Hitler did that with the Jews and other non-Aryans. I'll bet there were some non-Aryans who did some very evil things, thereby giving him the excuse, in his warped mind, to consider them all vermin and treat them all as such. There are muslim extremists, of the al Qaeda, Hamas, et al. terrorist type, who view Christians and Jews in exactly the same way.
But no matter who holds that view about other whole races or nationalities of people, we know where it comes from -- straight from hell (or Satan if you want to give it a name).