That’s leftist propaganda.
Would you trade places with a black man in 1950’s America?
Like I said, there are downsides to every era. The 1950’s was not Leave it to Beaver for everyone.
The movies and TV shows of that era reflect the ideal, but they are not a realistic portrayal of what life was like for most people back then. People are pretty much the same now as they’ve always been, we’re just more open about it in our media.