True... stalin was a real sunnuvabitch... he made Saddam Hussein look like Wayne Brady. but as far as why the Holocaust gets under people's skin so much was that the killing was based mostly on good ole fashioned family racism. Stalin annihilated everyone his path for even thinking about opposing him. Hitler on the other hand, targeted certain groups of people... Jews, gypsys, blacks, gays, anyone with a physical handicap, Protestant pastors, Catholic priests.. And I guess the kicker was that Germans KNEW how Hitler felt about Jews, how he said from jump that he was going to murder each and every last one... and the German people went along with it. Not a good look. Which is why my grandpa went to his grave 50 years after the war with a serious, serious mistrust of German people (I'm not saying he was right for that... it just was what it was). he swore up and down that if given the opportunity and the right list of excuses, german people would do it again and then try to pretend it didn't happen. We tried to tell him that the worst horror a German can unleash on the world in this day and age is David Hasselhoff or maybe goetta, but he wouldn't hear of it.