TIMELINE: Colin Kaepernick's journey from SF 49ers star to kneeling to protest police brutality, racial injustice - ABC7 San Francisco
Colin Kaepernick, Trump, and Why NFL Players Protest National Anthem
1 in 8 NFL players don't stand for anthem
Taking a knee: Why are NFL players protesting and when did they start to kneel?, The Independent
NFL players, owners defy Trump on anthem protests - Eurosport
The NFL's 'take a knee' movement and its impact on workplace protest, CU Boulder Today
NFL teams face fines over national anthem protests under new policy - The Boston Globe
NFL protests 2017: What's happening during Week 7?
Rebranding the NFL: How the League Shifted Its Message on Racial Justice - Knowledge at Wharton
NFL bans on-field kneeling during the national anthem