Fire NFL players for protesting? Union deals make that unlikely
About two dozen NFL players kneel during national anthem in London - CBS News
Will the Chiefs and Texans kneel to kick off the NFL season?
Kneeling for the National Anthem isn't disrespect. Sitting would be.
TIMELINE: Colin Kaepernick's journey from SF 49ers star to kneeling to protest police brutality, racial injustice - ABC7 San Francisco
Players from almost every NFL team kneel, lock arms, more for national anthem: 'There is no greater unifier'
NFL Will Likely Allow Players To Protest During National Anthem
NFL teams face fines over national anthem protests under new policy - The Boston Globe
Scholars deconstruct questions at the heart of protests involving national anthem – Harvard Gazette
Verify: Can NFL players get fired for protesting during the national anthem?
Some NFL players kneel or remain in locker room during anthem
NFL protests: 2 years of NFL protests, explained - Vox
NFL players protest, show unity during anthems