Reefer Madness (1938)

Do you know someone held captive in the seductive grip of marijuana? Sorry, I mean, "marihuana?" If so, you must do everything in your power to help your friend see the light before they're driven to mindless violence! And if that person happens to be you, then God have mercy on your soul... Or so Reefer Madness, AKA Tell Your Children would have you believe. Man, the makers of this film sound really uptight; if only there were a recreational substance that could help them relax...