Documentary focuses on the success and controversy of the U.S. track and field team

Fifty years since the Summer Olympic in Mexico City, NBC brought viewers back to that tumultuous and politically-charged year with a 90-minute documentary called “1968.” Four-time Olympic gold medalist and 23-time Grand Slam singles champion Serena Williams narrated the film, which made its broadcast television debut Sunday, Feb. 25. Watch this 2-minute trailer for the show, and look for the full documentary—which focuses largely on the U.S. track and field team—to be released online soon.

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