"...For the sake of all that is good and righteous. Kill them all."  Wow. There is a certain irony to that statement, given that Hitler thought pretty much the same about Jews and other so-called "untermensch". I think the Congressman missed the real point about events like the Holocaust: one must stop such destructive thinking in its tracks before it can do massive damage. Perhaps if the world, or at least if Germans, had responded forcefully to Hitler rather than believing in his message, those ovens would not exist. 

We need to look in the mirror in the USA and ask if we are capable of going down such a road ourselves. Categorizing all radicalized Islamists as worthy of death sounds an awful lot like deja vu all over again. Radicalization can be reversed. Indeed, we have less of a problem with radical Islam in the US than in Europe in part because we have not ostracized Muslims.