Riveting and inspiring first-person stories of how "taking a knee" triggered an awakening in sports, from the celebrated sportswriter In 2016, amid an epidemic of police shootings of African Americans, the celebrated NFL quarterback Colin Kaepernick began a series of quiet protests on the field, refusing to stand during the U.S. national anthem. By "taking a knee," Kaepernick bravely joined a long tradition of American athletes making powerful...