Police shot and killed a black teenaged girl on Tuesday afternoon in Columbus, Ohio, just as the verdict was being announced in the trial for the killing of George Floyd.
Police showed bodycam footage at a news conference of an officer shooting the girl as she appeared to attempt to stab two people with a knife.
A black-handled blade resembling a kitchen knife or steak knife appeared to be lying on the footpath next to her immediately after she fell.
Officers had responded to an attempted stabbing call when police shot the girl at about 4.45pm local time, police said. The 911 caller reported a female was trying to stab them before hanging up, they said.
The bodycam footage shows a girl appearing to push someone to the ground before lunging towards another dressed in pink with a knife in her hand.
The officer tells her to "get down" as she grapples with the woman in pink, who is leaning against the side of the car and and trying to dodge her blade. Four gunshots are then heard.
With the girl now on the floor, the woman in pink quickly leaves the scene.
A man is heard saying "she's just a kid" as the officer responds: "She came at her with a knife."
The girl was taken to a hospital, where she was pronounced dead, police said.
It was unclear whether anyone else was injured.
“This afternoon a young woman tragically lost her life,” Columbus Mayor Andrew Ginther tweeted.
He later said at the news conference: “We know based on this footage the officer took action to protect another young girl in our community.”
A crowd had gathered Tuesday night at the scene on Legion Lane, which police had partially blocked off to traffic. Others gathered at the city’s police headquarters to protest, a week after officers pepper-sprayed a group that tried to enter the headquarters over the police killing of a man who had a gun in a hospital emergency room.
Hundreds of protesters pushed past police barriers outside the headquarters and approached officers as city officials were showing the bodycam video inside.
Many chanted “Say her name”, while others yelled “she was just a kid”.
Officers with bicycles pushed protesters back and threatened to deploy pepper spray on the crowd.
The girl’s name and age were being withheld while her family was notified, police said.
The shooting happened some 25 minutes before a judge read the verdict convicting former Minneapolis police officer Derek Chauvin of murder and manslaughter in the killing of Mr Floyd.