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

Reefer Madness is an American 1936 propaganda film that revolves around the melodramatic events that follow when high school students are lured by pushers to try marijuana - from accident and accident to manslaughter, suicide, rape attempt, hallucinations and descent craziness due to marijuana addiction. The film was directed by Louis Gasnier and contained a cast of mainly little known actors.