Pittsburgh Steelers all-pro wide receiver Antonio Brown on Saturday night appeared to offer his support for the movement of protests during national anthem when he posted on Instagram a photo of himself kneeling.

Brown wrote, "Send the invoice to Christopher Johnson," alluding to the Jets owner who said he would pay the fine for players who made a gesture during the anthem. The NFL instituted a rule this week that required players to stand for "The Star-Spangled Banner" on the field or remain in the locker room, which would take the steam out of a group of players who have knelt or otherwise gestured during the anthem to protest social injustices.

The new NFL policy says teams will be fined if players or staff members stay on the field and "do not stand and show respect for the flag."