Public pools are more of a bellwether for racial and economic inequality than you might think. We break down the numbers.

Public and private pools are facing closures and limited hours because of a lack of qualified staff for the season.

In her new book, “The Sum of Us: What Racism Costs Everyone and How We Can Prosper Together,” Heather McGhee looks at how racism drained not only public pools, but also public support for universal healthcare and other “big government” policies.