Colin Kaepernick started protesting on this day in 2016
Colin Kaepernick, Biography, Taking the Knee, Activism, Stats, & Facts
A timeline of NFL national anthem protests
U.S. national anthem kneeling protests - Wikipedia
Taking the knee - Wikipedia
The Spirit of 1968 Lives on Today in Athletes like Colin Kaepernick
Scholars deconstruct questions at the heart of protests involving national anthem – Harvard Gazette
Why NFL players protest during national anthem
Shaun King on Donald Trump, Colin Kaepernick, and White Supremacy - The Intercept
Colin Kaepernick: How taking a knee started after NFL quarterback met Nate Boyer, NFL News
Colin Kaepernick's rise from quarterback to social activist: a timeline — Andscape