"... Everybody must know, or remember, that Hitler and Mussolini, when they spoke in public, were believed, applauded, admired, adored like gods. They were “charismatic leaders”; they possessed a secret power of seduction that did not proceed from the credibility or the soundness of the things they said, but from the suggestive way in which they said them. And we must remember that their faithful followers, among them the diligent executors of inhuman orders, were not born torturers, were not (with a few exceptions) monsters: they were ordinary men. Monsters exist, but they are too few in number to be truly dangerous; more dangerous are the common men, the functionaries ready to believe and to act without asking questions."
Here is also a book the revolutionized my outlook of social life:
The Mass Psychology of Fascism