On Tuesday, the NFL owners and representative players will meet to discuss the National Anthem protest that has been a driving issue this season – this as protest initiator and former San Francisco 49ers’ quarterback Colin Kaepernick filed a grievance against the NFL, saying the 32 owners colluded to keep him out of the league because of his activism.

A bit of background: “The Star-Spangled Banner” has been played before NFL games since at least 2009 at the behest of the U.S. Department of Defense, ostensibly to bolster recruiting. The NFL rulebook says that teams must be suited up and on the field before the Anthem begins, standing facing the flag, with their helmets in their left hands and their right hands over their hearts. In the third preseason game of 2016, a reporter noted Kaepernick sitting through the Anthem to protest police brutality against people of color.