What happened in Tulsa, Oklahoma, back in 1921 has too slowly become a piece of America’s collective memory. A century after a white mob claimed the lives of almost 300 people and left thousands homeless, PBS is resurfacing Sam Pollard’s 1993 documentary on the subject, which originally aired at a time when the massacre was little known. The film relies on 15 Black residents to remember this dark day in Tulsa’s history, and also to tell of the moments that came before and after it—the community beneath the wreckage, the pasts and futures of those that fell victim to unthinkable violence. “What was fascinating to me was how resilient the community was after [the riot],” Pollard said in a recent interview, “and how they really came back.” —J.V.