In this Jan. 24, 2017, file photo, Kareem Abdul-Jabbar, third from left, joined by former and current professional athletes, from left, Jim Brown, Takeo Spikes, Chris Webber, Anquan Boldin and Tommie Smith, pose for photos alongside Dr. Harry Edwards after a sports and activism panel entitled "From Protest to Progress: Next Steps" in San Jose, Calif. Abdul-Jabbar boycotted the 1968 Summer Olympics. At the same games, held in Mexico City, American track athletes Tommie Smith and John Carlos held raised fists covered in black leather gloves as the national anthem played after winning gold and bronze medals in the 200-meter race. (AP Photo/Marcio Jose Sanchez, File)
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This year's NFL season featured two of America's pastimes: football and race, with pre-game protests dividing fans along color lines and making Sunday afternoons among the most segregated hours in the country.