Has anyone read Maus by Art Spiegelman??

He's talking about the mob mentality. As humans, not all of us easily take the leadership role. Unfortunately, through history, we have seen people support the slaughter of Jews during the Holocaust. Although there were many other underlying factors as to why people followed the Nazi group, one of these factors was the mob mentality. As humans, once we have been separated into groups, it's in our nature to be competitive with other groups or individuals, in some cases this can be deadly.