I do agree that TV and movies were clean in the 1950's and 1960's. However, think about who was in charge of the New Hollywood Era and the Rural Purge in the 1960's and 1970's. Notice many of the actors in films like 'Easy Rider' and 'The Graduate' (considered early and important films for the new era) are from the silent generation. Also, the executives responsible for the rural purge were born in the 1920's.
Who are the parents of boomers? Why didn't they do a better job raising their kids? Maybe the greatest generation was too materialistic. The greatest generation created car friendly suburbs which killed communities, got the USA into the Vietnam War, created the welfare programs, passed easy divorce laws (Reagan was very guilty of this), etc...
I am not trying to defend boomers by the way. I agree that many willingly embraced the changes but often with encouragement from their elders (such as greedy TV executives and corrupt university professors and charismatic cult leaders like Charles Manson). I will blame boomers for making things worse and creating the entitled and tyrannical and quite dangerous Gen X and Millennials (both with many exceptions) who will deserve hatred from the next 2 generations down the line because they are making things worse.
en.wikipedia.org
en.wikipedia.org