Reefer Madness (1938 anti marihuana movie)

http://en.wikipedia.org/wiki/Reefer_Madness

Reefer Madness (aka Tell Your Children) is a 1936 exploitation film revolving around the tragic events that ensue when high school students are lured by pushers to try "marijuana": a hit and run accident, manslaughter, suicide, rape, and descent into madness all ensue. The film was directed by Louis Gasnier and starred a cast composed of mostly unknown bit actors. It was originally financed by a church group and made under the title Tell Your Children.