The shooting on Saturday triggered violent clashes that night and more peaceful protests on Sunday in the latest in a string of USA police killings that have at times sparked nationwide demonstrations. "They go to question him, and at that point a confrontation ensues and he is shot".
In the video, officers shove Augustus onto a police vehicle and when he tries to run away, an officer shoots him.
As the man attempted to evade police, his T-shirt is pulled up, revealing a holstered handgun. It is unclear if he was actually reaching for the gun. Police recovered a weapon at the scene, but the slain man did not fire his gun at officers.
Augustus had been walking in the Windy City's South Shore neighborhood when cops patrolling on foot noticed a "bulge" around his waist and stopped him for questioning, according to Waller. "He started flailing and swinging away, trying to make his escape". The man became combative and eventually broke free from the officers, Waller said.
The video shows four officers approaching Augustus outside a store. Four protesters were arrested and some police officers suffered minor injuries from thrown rocks and bottles, some of which were filled with urine.
"The whole situation was hard for all involved", Guglielmi said on Sunday. A Justice Department report issued in January 2017 determined Chicago police officers were guilty of frequently using "excessive force" against the city's African-American and Latino populations.
He said he consulted with the Augustus family, community leaders and COPA investigators.
The city saw weeks of peaceful protest in 2015 after the release of a video showing white police officer Jason Van Dyke shooting black 17-year-old Laquan McDonald 16 times in 2014.
Protesters march after a man was shot by police in Chicago, Illinois, U.S., July 14, 2018 in this still image taken from a video obtained from social media on July 15, 2018.
The shooting that sparked the protest was described by the Chicago Police Department in a preliminary statement.
Residents had asked for more police presence in the area where the shooting took place, Waller said.
In the video, released much earlier than expected by the Chicago Police Department, shows Augustus clearly had a gun holstered, as well as an additional magazine.
The Civilian Office of Police Accountability, which investigates shootings involving officers, said it was analyzing the video and asking anyone who may have captured cellphone footage to share it with the agency.
The tension escalated later in the evening as police advanced and tried to push protesters back from the scene, hitting at least six people with batons, prompting some protesters to punch back at police.