CHICAGO – Police's robbery with protesters Saturday night in the country's third largest city, after a police in Chicago killed a man on a southern side of the city.

Officers were struck by stones and bottles that dozens of protesters gathered near the scene on Saturday, according to police. Four demonstrators were arrested late on Saturday when the police cleaned the crime scene, "said Anthony Guglielmi, police chief executive spokesman. Fred Waller, Head of the Department's Patrol Division, said three or four officers were injured.

It was not immediately clear what charges the arrested protesters face.

Videos published on social media appeared to show several officers pulling a man on stage. Protesters chanted "killer" and "no justice, no peace" at officers.

The police said in a statement that the fatal shooting happened when officers on foot in the South Shore area attempted to question a man "showing an armed person's character." Waller added that officers who were stationed in the area saw a bulge in the man's pants whom they suspected were a weapon.

No police were injured in the confrontation with the suspected gunman. A weapon was restored on site.

"As they approached him, he tried to push his hands, began flailing and turning away, trying to get his escape, and when he tried to get his escape, he reached for his weapon," said Waller.

The officer as deadly shot suspected will be placed on desktop service for the next 30 days, the default procedure for more than 12,000 officers, while the city's civil police office investigates the shot.

A rupture later broke out on the stage of the shot between chanting protesters and police with batons. Video showed several police and protesters shoving each other.

After nightfall, the protesters continued to grind around the police and chased them at times. Protesters cried insults at the police and threw some bottles on them. Video showed a protest thrown to the ground surrounded by polish-holding batons.

Waller said protesters also caused damage to troop cars.

Members of the Chicago Police Department look at an angry crowd gathered at the scene of a policeman-inspired shooting in Chicago, Saturday, July 14, 2018. (Photo: Nuccio DiNuzzo / AP)

Chicago has an uneasy story of police and police crimes.

The city saw weeks of peaceful protest 2015 after a video was released showing white police Jason Van Dyke shot the black 17-year-old Laquan McDonald 16 times in 2014. Van Dyke was accused of murder. McDonald's death resulted in the police chief and a series of reforms being designed to prevent future police abuse and to keep officers responsible for excesses.

Van Dyke is waiting for trial.

A 2017 justice department investigated Chicago officers used to force almost 10 times more in incidents involving black suspects than against white suspects. Afro-Americans were the subject of 80% of all police weapons applications and 81% of all TASA contacts used between January 2011 and April 2016. Of incidents where violence was used against minors, 83% were involved in black children and 14% of Latin children involved in the same period , notes the report.

Chicago has also spent about $ 709 million on settlements for police crimes, according to a report from the Action Center on Race & Economy.

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Contributing: Associated Press

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