You should read Ordinary Men [1] sometime. All humans have the capacity for evil which is why we must stay vigilant.
From the description:
Browning argues that most of the men of RPB 101 were not fanatical Nazis but, rather, ordinary middle-aged, working-class men who committed these atrocities out of a mixture of motives, including the group dynamics of conformity, deference to authority, role adaptation, and the altering of moral norms to justify their actions.
From the description:
Browning argues that most of the men of RPB 101 were not fanatical Nazis but, rather, ordinary middle-aged, working-class men who committed these atrocities out of a mixture of motives, including the group dynamics of conformity, deference to authority, role adaptation, and the altering of moral norms to justify their actions.
[1] https://www.amazon.com/Ordinary-Men-Reserve-Battalion-Soluti...