In 1961 Yale psychologist Stanley Milgram conducted a series of experiments to determine just how obedient the average adult will remain in a situation where they morally disagree with the authority at hand.
Watch the BBC recreate the famous Milgram experiment in 2009.
And while we’re just scratching the surface here, let’s not forget 1971′s Stanford Prison Experiment which examined the psychology of prison life from all perspectives; that of the prison guard and the prisoner alike.
Watch a TV documentary about the Stanford Prison Experiment. The brainchild of psychology professor Phillip Zimbardo, this experiment became so intense that it was shut down after a mere six days.