A history of the activism and achievement of African American athletes from Jesse Owens to Serena Williams to Colin Kaepernick , who advanced the cause of social justice through their outspokenness, commitment, and integrity. Muhammad Ali refused to fight in a war he believed was immoral. Wilma Rudolph retired from track and field to campaign for civil rights. Colin Kaepernick took a knee during the national anthem to draw attention to the oppression...