I would argue that this enviroment of political correctness we have today is far more oppressive than the morals focussed society of the 50's.
I think that depends on perspective. In the 50's, PC was simply called good breeding. It meant to be brought up right. You tried to make those around you comfortable. Well bred people didn't use the N word, yet racism was still pretty widely practised, and in some areas, in very unpleasant ways. Women were treated rather poorly in a legal and economical sense. Children didn't have the same degree of protection they have now, and everyone downed 'one for the road'.
50 years and a lot of legislation later, some of the worst behaviours are being replaced with better understanding, better laws, better education, fairer practices. The world is far from perfect. We still see people behaving rather badly, and it is true that some instances of political correctness are over the top, but overall, I think there's fewer drunks on the road killing people, a greater regard in the work place for workers who aren't white guys, and fewer bconngeminis acting like a bunch of spoilt little stinkers than there was years ago. Maybe like dinosaurs, they're becoming extinct.
You have to love that the right has a double standard on this...don't be politically correct unless you're talking about war, religion, or right-winged political figures
Then again, I've never met the children of Rush Limbaugh or Ann Coulter. I might have to reconsider!