Trump using NFL and ESPN as political tools
Trump tweet, NFL response escalate drama of Sunday games
Buffalo Bills owner Kim Pegula seeks compromise with players on social protests - ESPN
NFL owners speak out in support of players, against Trump
How have New England Patriots, rest of NFL responded to Donald Trump's anthem protest comments?
Buffalo Bills players kneel, lock arms during national anthem
Leaked Audio Shows Just How Crazy That Meeting Between NFL Players and Owners Actually Was – Mother Jones
The NFL Responds to Donald Trump - The Ringer
Kaepernick's Lawyer Suggests Trump and Pence Broke the Law
Source: Eric Reid's grievance against NFL will focus on Donald Trump.
Photos of NFL players taking a knee after Trump's comments