Such protests during the national anthem began to gain attention when former San Francisco 49ers quarterback Colin Kaepernick began sitting, then kneeling, during the anthem at preseason NFL games.
Walker, who has been a Trump supporter, said after examples like Seattle Seahawks defensive end Michael Bennett being wrongfully profiled and handcuffed by Las Vegas police, the country needs to be responsible.
“Everyone needs to stand. Everyone needs to be respectful,” Walker said. “And then what I’d do is, ‘Guys, during the offseason, if you want to go walk the picket line in front of Congress, I will be right there with you, because black lives do matter.”
The former Heisman Trophy winner said it’s time for NFL commissioner Roger Goodell to get involved and make a league-wide rule outlawing protesting on the field and taking a knee during the national anthem. He also said that the blame can not be placed on Trump.
“The way he says things ... sometimes I disagree with him, but he’s still my leader,” he said.
WATCH: Trump Says NFL Owners Should 'Fire' Players Protesting the National Anthem