Raised upper middle class in TX. One college job was for home care agency where I went round East TX to supervise the care of the elderly by their families. I didn't know till then, till you really see it, it doesn't register. The best short description I've ever read or heard is the one your Dad made 30 years ago.
It's like the Civil War never ended.
Perhaps also, it's looked like the Confederacy won.
It was a time when the term ignorant really felt personal, in that I was realizing how entirely ignorant I had been most of my school years as to the realities that others faced and the reasons for them.