I blame NFL management to perpetuate the unpatriotism being displayed.
Players can be benched or removed at any time by the NFL.
The intentional permissiveness of these protests are tacit approval by the NFL so the entire football league is deemed unpatriotic in not condemning this display.
I saw a college game yesterday have something similar as the idiot QB of TCU(who Texas A&M last year got rid of as a bad egg) decided to display a gangster slit-your-throat mimic after a TD that cost his team 15 yards and allowed Arkansas to score easier in the waning moments of the game, effectively costing TCU the game.
When the QB made his mimic, the camera panned the crowd and his dad gave the Black Power fist salute to his son.
The fruit does not fall far from the trees. Costly mistake by TCU to take a known thug.