The district attorney in the southern US city of Tulsa, in Oklahoma, has charged the police officer who fatally shot an unarmed black man with first-degree manslaughter.
The shooting of Terence Crutcher on Friday was recorded by dashboard cameras and a police helicopter.
In the video, the 40-year-old man is seen with his hands up, appearing to comply with police officers and leaning against his car. He is then shot once by officer Betty Shelby, and falls to the ground.
Crutcher died at a hospital from a single gunshot wound to the chest.
Ms Shelby was charged with a felony count of first-degree manslaughter, which carries a minimum sentence of four years in prison if convicted.
Tulsa Police Chief Chuck Jordan, in releasing the footage to the public on Monday, called it disturbing and "very difficult to watch."
It is not clear from the video what Crutcher's exact movements were prior to the fatal shooting.
Ms Shelby's lawyer Scott Wood told The New York Times that Crutcher had been behaving erratically and had tried to put his hand in his pocket.
The Department of Justice has opened a federal civil rights probe into the incident, parallel to the investigation being carried out by local authorities.
Demonstrators in Tulsa, in the state of Oklahoma, had demanded that the officer be punished.
Protests in Tulsa have been peaceful so far, unlike in Charlotte, North Carolina where the shooting death of a black man at the hands of police on Tuesday set off two nights of clashes between law enforcement and demonstrators.
