Anyone using the “F” bomb in the early 1960s was usually of the “White Trash” variety.
After Bobby Kennedy was murdered the news media blamed mild TV and movies for all the violence. So the TV shows that were safe for kids dumbed down to appease the new standards.
But the movie industry, still under the Hays Code, said they would “police themselves” with a joke of a ratings system, the first being GMRX.
With the Hays code gone, they reshot scenes adding lots of blood, guts , sex, most vile language to get the then coveted “R” and “X” ratings.(Now NR rating).
As a result, a new generation of young people have been raised listening to the most vile cursing ever in movies and think it is normal to drop such words in everything they say. The generations since 1968 have made a headlong rush to be considered “White Trash” by us oldsters.