Gustave Le Bon 
Psychology of Revolution 

Often, revolts and uprisings are regarded as being solely the results of a perfect storm of geopolitical, societal, and economic factors. But as French sociologist Gustave Le Bon astutely points out in The Psychology of Revolution, more personal variables enter into the revolutionary equation, as well. He parses several historical revolutions and identifies psychological, mental, and emotional factors that proved to be important.