Extraordinary Popular Delusions and the Madness of Crowds is an early study of crowd psychology by Scottish journalist Charles Mackay, first published...
"Men, it has been well said, think in herds; it will be seen that they go mad in herds, while they only recover their senses slowly, and one by one."...
Le Bon's *Psychology of Revolution* examines the psychological mechanisms behind revolutions and the role of crowds in driving social upheaval. He ana...