What is perceived to be the predecessor “culture” conversely was also a made-up set of values imposed by socialists of a different stripe.
Look into the background and implementation of the “Hays Code” which controlled content of motion pictures for a generation. It was enforced under FDR.
Look into the connections, placements and real-life actions of Frank Stanton who ran programming of CBS-TV, including connections with the CIA and propaganda operatives from the Third Reich who were brought over here just after WWII in Operation Paperclip.
The large print and TV media in the US was largely a closed shop in the 1950’s until the late 1960’s, so much so that no one actively reported the shenanigans of LBJ and his administration adequately when it would have made a real difference.
The legacy of LBJ is one we’re still living with, now over 50 years after the facts.