I just watched a movie called Commune on Netflix. It is a documentary of life on a late 1960s hippie commune, and the present-day memories and interpretations of those who had lived there. I really liked the film. It is nostalgic, it explores a way of life most of us have little direct experience, and it gets at the ambiguities of that life. People reflect on the difficulties and hurt that arose from widespread and even obligatory promiscuity, and there is even a part where a cult basically takes some people's children away from the commune, with these parents' permission! On this latter point, no one interviewed in the film seems too willing to accept responsibility or guilt for the awful, immoral decisions they made with the lives of their children.
Anyway, if you can get a hold of it, I'd highly recommend this film.