Colin Kaepernick’s unassuming cover letter to the general manager of the New York Jets

That’s Colin Kaepernick, who took his last snap as an NFL quarterback on New Year’s Day in 2017, addressing New York Jets general manager Joe Douglas in a letter dated Sept. 21 and given a wider public audience this week. Kaepernick, who led the San Francisco 49ers to the Super Bowl in 2013 and went on to make headlines for his social activism (including, of course, his decision to kneel during the pregame playing of the national anthem as a silent protest against institutional racism and perceived policing malpractice), observes...