Google's advisory for this 1966 anti-porn documentary is a scream.

"This video may contain content that is inappropriate for some users, as flagged by YouTube's user community.''

While it's innocuous by today's standards (which pretty much proves the film's point), had this been shown in, say, any 1966 school auditorium, there would have been lots of uncomfortable squirming in the seats by boys trying to adjust their stuff. The film itself is racier than anything one was about to find publicly available in that era. (I actually agree with the overall sentiment, however - now that I'm older. )