When movies began around the turn of the last century, devout religious viewers did not like some of what they saw. In 1933, the Catholic Legion of Decency was formed. It ran until 1970.
It’s interesting to note that the Hippie “Summer of Love” occurred in 1967. Rosemary’s Baby was released in 1968 (a woman is made pregnant by the devil). And another Hippie event, Woodstock, occurred in 1969. By 1970, the die had been cast for a movie industry that moved closer and closer to making porn mainstream, and that effort continues to this day.
For those among you who are interested in how Catholic boycotts and protests affected the motion picture industry, I suggest getting a (used or library) copy of: The Cross and the Cinema: The Legion of Decency and the Catholic Office for Motion Pictures, 1933-1970, by James Skinner.