The (not so gentle-)man on the right,Joseph Goebbels, was the living example* of contagion theory and how to put it to 'best' possible use.As Hitler's right hand man and propaganda minister and no less an orator than Hitler himself,he instigated many a mob violence against helpless Jews, most infamous being the one at Kristallnact which 'started it all' (Ref: http://en.wikipedia.org/wiki/Kristallnacht) . The most infamous quote of his " If the lie ,however big and audacious, is told repeatedly and in convincing manner, will eventually be accepted by the masses" underscores how a few can instigate many to put their brains/rationality 'at rest'.
*See the video of his boss and see closely how he casts a spell on audience..
http://www.youtube.com/watch?v=eGhdX1SI3KY
(wanted to post here only but it wont work :-(
