In 2015, protesters blocked Interstate 94 after police released a graphic dash-cam video showing an officer shooting 17-year-old Laquan McDonald.
In a statement, the city's Civilian Office of Police Accountability said it's committed to a thorough, objective and unbiased investigation of the shooting.
Police spokesman Anthony Guglielmi tweeted that four protesters were arrested.
She said Augustus explained that he wasn't, the situation escalated, and he was shot as he was running away. McDonald's death led to the ouster of the police chief and a series of reforms meant to prevent future police abuses and to hold officers accountable.
Guglielmi said body camera and surveillance footage showed Augustus had what appeared to be a gun. After hours of tension, the group became "combative" and arrests were made after protesters jumped on top of two squad cars, causing damage.
According to Chicago police chief Fred Waller, the two officers involved in the shooting were on foot patrol and saw a man who "they thought might have been armed from the bulge around his waistband".
Protesters in Chicago are demanding answers after the fatal shooting of a man by police prompted violent confrontations in the IL city.
Residents subsequently clashed with police. The police have claimed that the violence was in response to protestors throwing bottles and rocks, although as of yet there is no video footage to back this up.
In another, a man tumbles to the ground as officers swing batons at the crowd. Four protesters were arrested, Reuters reported.
Authorities say a man has died after being shot by a Chicago police officer, and a crowd gathered at the scene to protest. Video circulating on social media show tense confrontations between police and protesters. After the release of that video, the city erupted in protest.
The officer, Jason Van Dyke, was charged with murder.
McDonald's death led to the ouster of the police chief and a series of reforms created to prevent future police abuses and to hold officers accountable.
The incident happened shortly after 9:30 p.m. Friday in the 7900 block of South Essex Avenue, according to the Chicago Police Department.