斯大林，洪秀全，波尔布特 。。。。。。。
关于群众运动，社会哲学家Eric Hoffe写了一本经典
The True Believer: Thoughts on the Nature of Mass Movements
值得一读。
“Hatred is the most accessible and comprehensive of all the unifying agents. Mass movements can rise and spread without belief in a god, but never without a belief in a devil.”
关于群众运动领袖：
“The quality of ideas seems to play a minor role in mass movement leadership. What counts is the arrogant gesture, the complete disregard of the opinion of others, the singlehanded defiance of the world.”
关于群众运动的社会心理学：
“The permanent misfits can find salvation only in a complete separation from the self; and they usually find it by losing themselves in the compact collectivity of a mass movement.”
“A man is likely to mind his own business when it is worth minding. When it is not, he takes his mind off his own meaningless affairs by minding other people's business. This minding of other people's business expresses itself in gossip, snooping and meddling, and also in feverish interest in communal, national, and racial affairs."
“people with a sense of fulfillment think it is a good world and would like to conserve it as it is, while the frustrated favor radical change.”
关于群众运动的后果：
“There is a tendency to judge a race, a nation or any distinct group by its least worthy members. Though manifestly unfair, this tendency has some justification. For the character and destiny of a group are often determined by its inferior elements.”
这话当然政治不正确，但有statistical significance。问精通中国历史的网友们，在那么多的农民起义中，推动社会进步的有几个？
