CHICAGO >> A community activist who has pushed for more police transparency said today that he’s asked Chicago police for the body camera footage from all the officers at the scene where one of them fatally shot a black man over the weekend.

William Calloway said a brief video released by police showing the view from one officer’s body camera does not answer crucial questions, starting with the reasons the officers approached 37-year-old Harith Augustus on Saturday afternoon just before he was shot. Calloway also said that a police spokesman’s explanation that the Augustus was “exhibiting characteristics of an armed person” does justify stopping someone in a city and state where it is legal to carry a concealed weapon.

Police Superintendent Eddie Johnson said Sunday that detectives have found no documentation that Augustus had a concealed carry permit, but Calloway said there is no way officers at the scene could have known that when they approached him.

The video released by police did not include sound so it is impossible to hear what was said by either Augustus or any of the four officers at the scene. It shows one of the officers trying to grab the arm of Augustus, who spins and runs away with a clearly visible holstered gun on his hip.

“He was having a civil conversation with the black cop at first so we need to know what he and that officer were saying,” he said. “There needs to be (footage) from four police officers with audio.”

The police department did not immediately return a call for comment about Calloway’s request.

At a news conference on Sunday to announce the release of the 51-second video, Johnson said the way the technology works is that there is a “30-second buffer period” in which there is no audio before the sound is activated. It is unclear why there is no sound throughout the entire video.

Calloway was instrumental in a legal battle that ultimately led a judge in 2015 to order the release of dashcam video showing the 2014 shooting of teenager Laquan McDonald. The release of that video of Officer Jason Van Dyke shooting the teen 16 times, sparked massive protests, cost then-Police Superintendent Garry McCarthy his job and prompted various federal and local investigations. Van Dyke is awaiting trial on first-degree murder charges.

Calloway said he wants to give the police department a chance to release the rest of the videos — complete with audio — but if they refuse he will the city to force its release.

Johnson said on Sunday that release of the video one day after the shooting was the quickest he had ever ordered such a disclosure. He said that he did so to avoid a repeat of the clashes between angry residents and police that took place Saturday night. Protesters threw rocks and bottles — some filled with urine — at police and officers responded by hitting some demonstrators with their batons.

After release of the video, protests on Sunday evening were peaceful. But the community remains tense and a “demonstration against the police murder of Harith Augustus” organized by a group called the Chicago Alliance Against Racism and Political Repression was scheduled for this evening at the scene of the shooting.