Of course America loved “The Blind Side,” the 2009 movie about a homeless and hapless Black teenager rescued from a bleak future by a wealthy, white family. It was based on the true story of the Tuohy family, led by Sean and Leigh Anne, who took the future N.F.L. player Michael Oher into their home and raised him proudly as he made it to college and beyond.

It’s the type of story we’re used to in sports, one that undergirds our beliefs about sport’s power to create lifelong bonds, help its participants overcome hardships, and build character. It’s also a simplified rendering of race in America, one that hinges on the trope that white people can be magically redeemed by coming to the aid of a Black character.

Audiences sucked it up. The film took in over $300 million and Sandra Bullock won an Oscar for her portrayal of Leigh Anne Tuohy, self-possessed belle of the New South.

But “The Blind Side,” based on the best-selling book by Michael Lewis, renders a complicated…