About two dozen players, including Baltimore Ravens linebacker Terrell Suggs and Jacksonville Jaguars running back Leonard Fournette, took a knee during the playing of the national anthem before the start of the teams' game at Wembley Stadium on Sunday.
Other players on one knee during the performance included Ravens linebacker C.J. Mosley, wide receiver Mike Wallace and safety Lardarius Webb as well as Jaguars linebacker Dante Fowler, defensive tackle Calais Campbell, defensive end Yannick Ngakoue and cornerback Jalen Ramsey.
Players on both teams and Jaguars owner Shad Khan, who were not kneeling, remained locked arm-in-arm throughout the playing of the national anthem and "God Save The Queen," the national anthem of Britain.
No players were kneeling during the playing of the British national anthem.
President Donald Trump had a suggestion on Saturday for National Football League owners whose players decide to take a knee during the national anthem: fire them.
Baltimore Ravens owner Steve Bisciotti says he "100 percent" supports his players' decision to kneel during the national anthem ahead of Sunday's game
The Ravens issued a statement from Bisciotti minutes after kickoff, saying: "We recognize our players' influence. We respect their demonstration and support them 100 percent. All voices need to be heard. That's democracy in its highest form."