This is not a rhetorical question:

The rationale for having people deal with graphic depictions of Nazi internment camps and all that is not usually just that it is a fact of history, and people should acquaint themselves with it, nor that it tells us something important about the human condition, but that we must know about it so we can stop its like from ever happening again. So, I wonder, have efforts to educate people about the Holocaust actually done anything to stop other acts of genocide or mass murder?