Stanford University, 1971. One of history's most notorious psychology studies begins. Led by Dr. Philip Zimbardo, the experiment simulated a prison environment and assigned students to the roles of guards and prisoners. Myths abound about what really happened but in this documentary series, participants take a seat in front of the camera to reveal never-before-heard details of an event that has shaped our understanding of human nature and good versus evil for the past 50 years. Watch The Stanfor

Prison has its own rules, its own justice, and its own way of dealing with the worst of the worst. But what happens when you’re at the bottom of the food chain? In this new video, we explore what happens to the most hated prisoners behind bars. | The Infographics Show