Yes, I do, in fact, know this. And, I have done much research on the Holocaust myself.
My point was that it is best to not characterize groups by group identity when you are literally talking about killing them.
Does saying that all Germans, civilians or otherwise, should have been slaughtered in WWII, or that you would have done so, not turn you into your worst enemy?
Is it not dangerous in war to characterize civilians as nothing more than "the enemy"? After all, hate begets hate. Would you be equally as likely to suggest that it's alright to discriminate against others for the sins of their forbears or their representatives? I am not trying to be confrontational, or, not overly so, but I am trying to fathom how it is rational to hate an entire nation for the sins of some quarters of the populace, majority or not.
I must ask for a clarification, however. Did you mean that all civilians involved in the war effort should be eliminated, or that you would have done so, or all civilians who were the enemy?
That being said, I do understand Kelsier's motives, which is why he's such an interesting character to me, as all of Sanderson's characters are, really.