Denial of Collective Psychopathology
Michael Vlahos
Roger Griffin, an authority on Fascism, summarizes his conclusions about Nazi destructiveness on his website: “Since so many millions were involved in Nazism and the Holocaust, this can’t be explained in terms of madness or pathology." This is equivalent to saying that because millions of people get cancer--the disease can't be understood as form of pathology.

Nazism was a form of collective psychopathology: tens of millions of people embraced and shared a form of madness.

Read the complete paper:
Political Violence as Collective Psychopathology