I think there is a parallel between Nazis and the Islamists. The Nazis had their drunken beer hall thugs, just as the Islamists have their raging crowds. But as you noted, the real damage came from the ones who appeared normal. Recall that the 9/11 hijackers lived calm, everyday lives here in America, even as they were plotting to commit the most heinous acts of murder.
“I think there is a parallel between Nazis and the Islamists.”
Nicely covered in this History Channel show...
“Saddam and the Third Reich DVD “