Players in the National Football League (NFL) have knelt and locked arms in a wave of protests at US President Donald Trump’s “offensive” and “divisive” comments aimed at their teammates.
In a growing row with the sports world, Mr Trump insisted that players who failed to stand during the national anthem should be fired or suspended.
Sunday’s protests are the largest of their kind since they began last year.
Players have been protesting at racial injustice and police violence.
Mr Trump’s calls to fire players taking part in such protests were supported by many, but have proved deeply divisive.
To a crowd of cheering supporters on Friday, Mr Trump asked: “Wouldn’t you love to see one of these NFL owners, when somebody disrespects our flag, to say, ‘Get that son of a bitch off the field right now… he is fired’?”
He was referring to a widespread protest movement in the sport started by player Colin Kaepernick, who began sitting or kneeling during the anthem last year in protest against police brutality and the treatment of black Americans.