grimbletart has it exactly, as people age they hark more and more back to the world of their youth.
For people in their 80's that's still before and during WW2.
For worse and better a lot has changed.
The loss of decent industrial jobs and prospects for many men to find a way to support their families saddens my engineer father terribly.
The move to tolerance and women's rights is clearly an improvement and having two DDs my dad does his best with this, but he doesn't always succeed.
But what ever Londoners think, for many of us in rural, dare I say West country, areas Ethnic minorities are rare and keeping up with this weeks PC language is impossible.
Sadly even young adults and school children can behave badly. DDs friend and her sister were the only non whites at their primary. Even now in her large secondary there are very few. Nasty things have been said

, she is the nicest child imaginable.
Sadly if young people who should no better don't, I think the OPs father may be beyond hope.
However, that doesn't mean she shouldn't tell him to fucking shut up, it just means he won't hear her