Kansas City Chiefs star Patrick Mahomes was among a group of players who sent a powerful message to the NFL in the wake of George Floyd's death.
Floyd died in police custody in Minneapolis last week, sparking protests at police brutality and racial injustice across the United States and beyond.
In a powerful video posted on social media on Thursday, 2018 NFL MVP Mahomes, New York Giants running back Saquon Barkley and the Dallas Cowboys' Ezekiel Elliott were involved in sending a message to the NFL.
"How many times do we need to ask you to listen to your players? What will it take? For one of us to be murdered by police brutality?" the group of players said in the video.
They added: "On behalf of the National Football League, this is what we, the players, would like to hear you state: We, the National Football League, condemn racism and the systematic oppression of black people.
"We, the National Football League, admit wrong in silencing our players from peacefully protesting.
"We, the National Football League, believe black lives matter."
NFL commissioner Roger Goodell said recently that there was "an urgent need for action" in the wake of Floyd's death.
New Orleans Saints quarterback Drew Brees apologised on Thursday after facing criticism for saying he disagreed with players kneeling during the United States national anthem.
Former San Francisco 49ers QB Colin Kaepernick started kneeling during the anthem in 2016 as a protest against police brutality and racial inequality.