Adrian Peterson says he's "without a doubt" taking a knee during NFL national anthems this season ... and he claims the entire league is considering doing it with him.
"We're all getting ready to take a knee together," the future Hall of Famer said.
Peterson told a pack of reporters out at a charity event in Texas on Friday he isn't worried about a possible punishment for the protest from league owners or the NFL commish either.
"Are they going to try to punish us all?" the Redskins star running back said.