This documentary came to me courtesy of a subscription I was gifted to the Oscilloscope Films catalog for a calendar year, and I finally got around to giving it a spin recently.
Told in a combination of vintage footage, narration and other techniques, we learn that the idea of 'teenagers' didn't exist as a demographic until the mid-20th century. It was around this time that the older generation began to struggle with the youth of the '40s and '50s as they tried to establish their own identities, which is when the term 'teenager' came into being.
I enjoyed the movie overall, but aside from the revelation that no one knew how to relate to these kids at this awkward stage, there's not a lot of 'aha!' moments to be had. Certainly an interesting look at history through very specific eyes, and something I am happy to have checked out.