The NFL Players Association filed a non-injury grievance Tuesday challenging the legitimacy of the NFL's new national anthem policy on several grounds.

"The union's claim is that this new policy, imposed by the NFL's governing body without consultation with the NFLPA, is inconsistent with the collective bargaining agreement and infringes on player rights," the NFLPA said in a statement.

The NFLPA, which was not consulted about the anthem policy change, argues in its grievance that peaceful demonstration during the anthem does not qualify as "conduct detrimental to the integrity of and public confidence in the National Football League."