Good for him.
I'd be interested in the response if the players protested in a different way... I thought about it this morning. On the first play of the game all players kneel at their position in a show of solidarity. The offense gets a 5 yard penalty for delay of game. On first and 15, a defensive player encroaches, and negates the penalty. First and 10. No time taken off the clock. And the players basically give a giant middle finger to Roger Goodell - I'd love to see it happen.