CHICAGO — The white officer who shot a black Chicago teen 16 times has been charged with murder and jailed. The graphic video of the slaying has been made public. And in the hours after the footage was released, protesters seemed to honor pleas for restraint.

The question now is whether those efforts will be enough to address the simmering resentment that authorities took more than a year to share the footage and charge the officer who emptied an entire magazine into the teen even after he had crumpled to the ground.

City officials and community leaders had long braced for the release of the dash-cam video showing the death of 17-year-old Laquan McDonald. They feared the kind of turmoil that occurred in cities such as Baltimore and Ferguson, Missouri, after young black men were slain by police or died in police custody.

A judge ordered that the recording be made public by Wednesday. Moments before it was released, the mayor and the police chief urged protesters to stay calm.

Mayor Rahm Emanuel said residents will “have to make an important judgment about our city and ourselves and go forward.” He referred to the episode as a potential “moment of understanding and learning.”

Chicago authorities are right to be concerned. The sometimes violent protest movement that was galvanized by the killing of Michael Brown in Ferguson in August 2014 continues to disrupt cities nationwide. The Nov. 15 killing of black 24-year-old Jamar Clark by a white Minneapolis police officer has prompted days of protests outside a police precinct. And the demonstrations continue, despite calls from Clark’s family to go home after a shooting near the protest site injured five people.

In Chicago, protest groups are expected to stage more demonstrations in the days ahead, including one at City Hall scheduled for Wednesday and another seeking to block the main city’s shopping thoroughfare, Michigan Avenue, during Friday’s holiday spending bonanza.

Among the protesters was Justin Taylor, an 18-year-old University of Iowa student who returned home to Chicago for Thanksgiving.

“It’s powerful we’re coming together,” Taylor said. “Things like this happen too often.”

The relevant portion of the video runs for less than 40 seconds and has no audio.

McDonald swings into view on a four-lane street where police vehicles are stopped in the middle of the roadway. As he jogs down an empty lane, he appears to pull up his pants and then slows to a brisk walk, veering away from two officers who are emerging from a vehicle and drawing their guns.

Almost immediately, one of the officers appears to fire from close range. McDonald spins around and collapses on the pavement.

The car with the camera continues to roll forward until the officers are out of the frame. Then McDonald can be seen lying on the ground, moving occasionally. At least two small puffs of smoke are seen coming off his body as the officer continues firing.

In the final moments, an officer kicks something out of McDonald’s hands.

Police have said the teen had a knife. Cook County State’s Attorney Anita Alvarez said Tuesday that a 3-inch knife with its blade folded into the handle was recovered from the scene.

Shortly after the video’s release, protesters began marching through city streets. Several hundred people blocked traffic on the near West Side. Some circled police cars in an intersection and chanted “16 shots.”