Holocaust HeartBreak

The holocaust was one of those moments in history that truly don't make a lot of common sense. How can one person hate a group of people so much that he wants to rid them from the world? Not one person but a whole ethnic group. He didn't know them individually he just hated them as a whole because they connected to his past and his abusive childhood. he probably was a jew himself! The story of torture and slavery and burning bodies curdles my blood and dampens my eyes. And how could the German people that lived by camps just turn their heads and ignore. They had to smell the gasturdly smell of burning bodies so why didn't they help save them? They were fearful of what would be thought of them or getting in trouble? A whole ethnicity group was being slaughtered like animals! The holocaust upsets me greatly. Someone of our kind of our species could wipe out people by the masses in a torturous way without a second thought.