This is one of the hardest but also one of the most important warnings from the history of Auschwitz coming for us today. Perpetrators were in fact people who accepted and followed an ideology that made them believe that they were better than others, an ideology that rationalized and promoted hatred & evil. This became part of their everyday lives and their environment. They were not monsters. They were people: fathers and mothers, husbands and wives, sons and daughters. They had their family joys and problems, their favorite desserts or songs, hobbies or fears. They were people like us. But they also perpetrated horrible things, monstrous things on behalf of the ideology they believed in. Dehumanization of all "others" was a tool that helped them achieve their goal. The perpetrators thought of themselves as moral people. And this is the scary part of this history. We cannot dehumanize them, as their story and choices are our human warning.