I remember in junior and high school in the 1960s we'd be shown 16mm film instructional videos usually on social topics. They were kind of heavy handed and prop

I remember in junior and high school in the 1960s we'd be shown 16mm film instructional videos usually on social topics. They were kind of heavy handed and propagandistic. I think a lot of these have been digitized into youtube for nostalgic entertainment. I dont know what happened between the mid 70s and 2000, when internet video took over.