Why American sports teams play the national anthem in the first place - Vox
Taking the knee: These are the NFL players protesting today
After Trump Blasts N.F.L., Players Kneel and Lock Arms in Solidarity - The New York Times
Jets commemorate Sept. 11 attacks, honor victims before Monday night game vs. Bills - The San Diego Union-Tribune
U.S. national anthem kneeling protests - Wikipedia
New York Jets players stand for the national anthem before an NFL football game against the New England Patriots, Sunday, Dec. 31, 2017, in Foxborough, Mass. (AP Photo/Steven Senne Stock Photo - Alamy
PHOTOS: NFL Players kneel in protest during the National Anthem
Can NFL Teams Legally Require Players to Stand for the Anthem? - Sports Illustrated
Why Are NFL Players on the Sidelines for the National Anthem?
Colin Kaepernick writes letter to Jets for practice squad QB job - Los Angeles Times
NFL players kneel, raise fists, lock arms during national anthem - CBS News
Black fans call NFL's plan to play 'Lift Every Voice and Sing' a 'joke,' 'placating,' 'pandering'
Giants kneel for anthem before season opener vs. Steelers
NFL fans belt out national anthem before Jets-Ravens game as 9/11 remembrances occur around the league