Stein has denounced the scientific theory of evolution, which he and other intelligent design advocates call "Darwinism", declaring it to be "a painful, bloody chapter in the history of ideologies", "the most compelling argument yet for Imperialism", and the inspiration for the Holocaust. Stein does not say belief in evolution alone leads to genocide, but that scientific materialism is a necessary component. He co-wrote and stars in Expelled: No Intelligence Allowed, a film that aims to persuade viewers that evolution was instrumental to the rise of the eugenics movement, Nazi Germany, and the Holocaust, and portrays advocates of intelligent design as victims of intellectual discrimination by the scientific community, which has rejected intelligent design as creationist pseudoscience. In the trailer for the film, Stein said that his aim was to expose "people out there who want to keep science in a little box where it can’t possibly touch God."