Both Hitler and Bin Laden, however, beg a far more important question. How do such sick and destructive individuals become legitimized and endorsed by entire nations or masses of people throughout the world? We can see on the surface that the malignant narcissist in power is an individual who uses his charisma and intelligence to inflate an ideology among a group of people who are vulnerable to blindly follow, no matter how irrational the claims appear to be. Members of both the Nazi Aryan supremacists and the extreme Muslim fundamentalists foster the delusion that their people are the only "true" people -- believing that everyone else must meet their test of conformity or be destroyed.
-- Eleanor D. Payson, The Wizard of Oz and Other Narcissists, p. 158