What Every N.F.L. Team Did During the National Anthem on Sunday - The New York Times
The History of NFL Player Protests During the National Anthem - WSJ
NBA: Thunder threatened with tax penalties if players kneel
More than 200 NFL players sit or kneel during anthem
NFL Owners Discuss Anthem Protests, Advertisers in NYC - Sports Illustrated
3 years after Kaepernick took a knee, the NFL is back to business as usual - Vox
Report: NFL owners debating 15-yard penalty for kneeling during anthem
NFL bans on-field kneeling during the national anthem
NFL players kneeling during national anthem: How Colin Kaepernick started a movement and why – The Daily Egyptian
NFL players protest during national anthem - Los Angeles Times
NFL announces national anthem policy
Broncos, Titans players take knee in peaceful protest during singing of national anthem, Sports
U.S. national anthem kneeling protests - Wikipedia