Cowboys-49ers 10/2/2016

FILE - In this Oct. 2, 2016, file photo, then-San Francisco 49ers quarterback Colin Kaepernick kneels during the national anthem before an NFL football game against the Dallas Cowboys, in Santa Clara, Calif. Ex-NFL player Colin Kaepernick helped start a wave of protests by kneeling during the national anthem to raise awareness to police brutality, racial inequality and other social issues. Big-name entertainers believe social injustice needs to be addressed during the Super Bowl and are ensuring the topic that ignited a political firestorm and engulfed the NFL will be in the spotlight. (AP Photo/Marcio Jose Sanchez, File)

FILE - San Francisco 49ers outside linebacker Eli Harold, left, quarterback Colin Kaepernick, center, and safety Eric Reid kneel during the national anthem before an NFL football game against the Dallas Cowboys in Santa Clara, Calif., Sunday, Oct. 2, 2016. From gambling suspensions of Paul Hornung and Alex Karras in the 1960s to Colin Kaepernick and other players kneeling during the national anthem, the NFL always seems to overcome controversies. (AP Photo/Marcio Jose Sanchez, File)

FILE - In this Oct. 2, 2016, file photo, San Francisco 49ers offensive tackle Joe Staley (74) blocks for quarterback Blaine Gabbert (2) against the Dallas Cowboys during the first half of an NFL football game in Santa Clara, Calif. Staley was the one constant in San Francisco during a more than decade-long roller coaster that saw the 49ers go from the basement to the Super Bowl twice in a career that ended with his retirement last week. (AP Photo/Marcio Jose Sanchez, File)

FILE - In this Oct. 2, 2016, file photo, from left, San Francisco 49ers outside linebacker Eli Harold, quarterback Colin Kaepernick and safety Eric Reid kneel during the national anthem before an NFL football game against the Dallas Cowboys in Santa Clara, Calif. When Colin Kaepernick took a knee during the national anthem to take a stand against police brutality, racial injustice and social inequality, he was vilified by people who considered it an offense against the country, the flag and the military. Nearly four years later, it seems more people are starting to side with Kaepernick’s peaceful protest and now are calling out those who don’t understand the intent behind his action. (AP Photo/Marcio Jose Sanchez, File)