In 1961, Stanley Milgram conducted a social experiment at Yale University that would earn him a reputation as one of the great 20th Century Social Psychologists.
But such an accolade didn't come without its controversy. Milgram's experiment was so ethically dubious that it saw him suspended from the American Psychological Association for a year.
His work helped disprove the 'Germans Are Evil' hypothesis. But in its stead, we are left with the haunting question of whether we could, ourselves, commit murder.