That I did not experience it, nor hear about it despite hearing thousands, if not more, claimed examples of racial grievances,
raises seriously questions about your claim.
I doubt you had much experience with black people, then.
All nations have their myths. It is human nature to highlight the good stuff about a nation and bury the bad stuff. People don't want to know about the bad things their ancestors have done. They want to know the good things.
YOur doubts are incorrect.
My neighbor hood, despite being fairly rural, had a high black population. It was, as I recognized early on, an oddity.
I also was exposed to a couple of big city urban yoots, because their mother sent them out to the country during the summer for their safety, to live with their cousin.
I saw no signs of discomfort from my white neighbors young or old about this, nor in school, or as already mentioned, in town.