What makes ordinary people commit extraordinarily violent acts? Is it their brain chemistry? Social pressure? Or a charismatic leader telling them it's their patriotic duty? In this episode, we explore the morality of a scientist who gave life to billions--but also facilitated the murder of millions; a psychiatrist who studied the brains of Nazi war criminals; a Rwandan who lost most of her family in the 1994 genocide; and hear from two experts on how authoritarian leaders can convince seemingly kind people to murder their neighbors.

Power Corrupts is written and narrated by Brian Klaas. The executive producer and sound editor is George McDonagh.