More than a dozen videos released by the Cook County Sheriff's Office this week show the uprising after Roberson was shot by a Midlothian, Illinois, police officer outside Manny's Blue Room Lounge in November.
"Your husband shot my husband. The police shot security. That's what happened," a disturbing security guard told the bar officials.
The videos, shot by police dash cameras, body cameras and bystander mobile phones, show only the aftermath of the shooting and not the moment Roberson was killed. It is unclear whether there are any recordings of the shooting.
The 26-year-old security guard was working at the bar in Robbins, Illinois, when a gun began shooting. Witnesses said Roberson stopped the guard and attached him to the ground. But shortly after, the Midlothian officer shot and killed Roberson.
While witnesses said the guard was wearing clothes that clearly identified him as security, the Illinois State Police, the agency who led the investigation, said Roberson had "plain black clothing without labeling that easily identified him as a security guard".
In a statement, Cara Smith, chief executive of the Cook County Sheriff's Office, said the agency released videos in response to a request for freedom of information law and "for reasons of transparency."
Smith also refused to comment on the criminal investigation and said that the detectives "continue to work diligently to investigate the original admission to Manny's in Robbins."
More videos recorded outside the club's show officers and paramedics awaiting Roberson, and later taking him away from the parking lot on a stretcher.
A man dressed in a black vest who said he was also a security guard can be seen in a few videos talking to an officer.
"Someone opened the side door, he came in and fired as (inaudible) five shots," he says before telling the officer how Roberson held an alleged gunman to the ground.
"Everything was clear. Everything was down. Everything was down, bruh," he added.
The man then describes the moment when midlothic officer opened fire.
"I tell him," He is working with us. Cool out. He works with us. "He shot him four or five times after we told him he is with us," he said.
He continues, "I want his name. I want his badge number."
The Illinois State Police described the events differently in the days following the incident.
"According to testimonials, the midlothian officer gave the armed subject more verbal commands to drop the gun and come to earth before ultimately letting out his weapon and beating" the security guard who the police had said in a statement.
Midlothian police officer Daniel Delaney described the shooting as "similar to a" blue on blue "friendly fire incident."
CNN's Eliott C. McLaughlin, Holly Yan and Darran Simon contributed to this report.