Oh yes. Reefer Madness is the classic cult anti-marijuana movie. Though hardly anyone actually references it an actual source of truthful information.

It is like 99.9999% propaganda. It's a classic "government trying to scare the shit out of you" technique eh.

I have the movie both in its original format and a cleaned up color version where the MJ smoke is green and purple.

I did a paper on it in college once. I got a good grade on it!