Taking a knee and Trump: the new era of total protest, Kathy Griffin
NFL players defy Donald Trump for a second week by kneeling during the US national anthem
Trump Cheers the NFL Fans Who Booed Players Taking a Knee During National Anthem
How A Texas Green Beret Helped The NFL's National Anthem Protests Evolve – Texas Monthly
Trump's blasts unwittingly brings NFL, players together in protest
NFL Bands Together to Protest Trump's National Anthem Comments
Rich Lowry: How the NFL lost to Trump
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For NFL Players, Civil -- and Visible -- Disobedience Is the Only Option - The American Prospect