Are you kidding me? There were full-blown riots in many major cities (and even smaller towns) 40 years ago and schools were extremely unequal. Not just in California, but my former neighbor who was a teacher in Newark, NJ had some pretty heinous tales to tell about the 70s there.
Inflation was bad, I read that the average gallon of gas in the 80s cost $3.50 in today’s dollars. You still have mixed neighborhoods in SD, just not in the areas which people on this site seem to gravitate to.
I think some people are looking at the 70s and 80s through rose-colored glasses!