That is fake. It isn’t in the darn rules!
Not Exactly!
This language does not appear in the NFL Rule Book, as the post indicates. However, it is apparently included in a separate document called the “game operations manual.” This document is not online, so we can’t review it first-hand, but McCarthy, the NFL spokesman, said it is distributed by the league to all of its member teams.
While text circulating on social media would seem to suggest there will be consequences for protesting during the anthem, there is discretion involved — and the NFL has repeatedly stated that it will not punish players for taking a knee during the anthem.