If you are very lucky, you have never, and will never, be in a situation where a group of ordinary people suddenly turn into an angry mob. It’s like the flip of a switch. In a heartbeat, centuries of evolution dissolve, and the hive mind kicks in. Whether you are part of the mob, the object of the mob’s outrage, or are simply caught up in the emotional frenzy, the mob mentality overrules the civilized mind and transforms perfectly ordinary people into raging, club swinging Neanderthals with a single purpose – destruction.
Segarini: Don't Believe a Word I Say 