Colin Kaepernick: How taking a knee started after NFL quarterback met Nate Boyer, NFL News
Green Beret Who Suggested Colin Kaepernick Kneel Surprised by Backlash
Colin Kaepernick kneeling timeline: How protests during the national anthem started a movement in the NFL
Colin Kaepernick timeline: Protests, what he said about kneeling
Taking the knee - Wikipedia
Colin Kaepernick started protesting on this day in 2016
I Fought for Our Country. Now NFL Players Are Kneeling for Me.
Colin Kaepernick: Netflix drama follows the birth of a protest figurehead - BBC News
Taking a Knee as Critical Civil Religion - The University of Chicago Divinity School
Timeline of Colin Kaepernick's role in the NFL kneeling protests
Colin Kaepernick: Timeline of a gesture and its echoes
Colin Kaepernick: Timeline of a gesture and its echoes, American Samoa
Colin Kaepernick kneeling timeline: How protests during the national anthem started a movement in the NFL