It's a fact that poverty and race are linked here, also because of the history.

You'd have to be an idiot in America not to know of all the wrongs against POC throughout history. It's all but obvious to a majority but just for good measure it's taught in grade school and a heavy component of a lot of movies/pop-culture. If you've made it far enough to be reading comments on HN, you're likely aware and don't need to be further educated.

Stats still show black people have very low rates of swimming skills. Who you know or who I know may differ, but stats are stats.

> Perhaps for yourself, as mentioned above 1964 was within my lifetime.

A generation is defined as 20-30 years, so this was 2-4 generations ago. My words hold true, you've seen a lot in your lifetime - despite all the issues we still have regarding race, I'd say you've seen blacks have a lot more mobility over your lifetime, but not a significant improvement of their swimming skills.