Birth Control
This movie was created by sex ed teacher, activist, and founder of Planned Parenthood, Margaret Sanger. She wanted to show the world that family planning, and the empowerment of women, came hand in hand with dropping the stigma around contraceptives. However, this movie came out in 1917, which was a bad year for women's suffrage. This movie was banned in America, and was only to be showed heavily censored "in the interest of morality, decency, and public safety and welfare."
Freaks
Freaks was a disturbing early thriller type movie that starred a group of disabled sideshow circus acts who get revenge on their ringleader when his heart gets broken by a trapeze artist. Freaks was banned for 30 years in the UK because it showcased disabled folks. The film is only available to view through a second-recording home-video format that's pretty difficult to find.