Surveillance video shows more than a dozen people doing nothing to help a Chicago bartender after he is attacked, left unconscious on the street and accidentally run over by a taxi, according to a newly filed lawsuit.

Marques Gaines, 32, later died at a hospital.

Gaines' family filed a wrongful death and negligence lawsuit against several businesses and taxi companies in his Feb. 7 death.

The video the family released Wednesday shows a man outside a convenience store punching Gaines, who falls to the ground.

Seconds after he hits the ground, two men run over and steal the contents in his pocket, Chris Hurley, the attorney representing the family told FoxNews.com.

“Literally seconds after he hits the ground,” Hurley said. “It’s pathetic.”

The video shows people ignoring Gaines and walking by before a taxi runs over his body. Hurley said the store’s security guard who witnessed the fight and called 911 failed to help Gaines who was lying in the street.

Chicago police say detectives are investigating and that the cab driver was not cited at the scene.

Relatives tell the Chicago Tribune they hope eyewitnesses will help identify the attacker.

"It was gut-wrenching," Drexina Nelson, Gaines’ cousin told the Tribune. "We had heard over the course of these past few three months what happened, but to actually see it with our own eyes was devastating."

Hurley said an official autopsy was not released but medical records indicate that Gaines died from the taxi’s impact and not the punch.

FoxNews.com's Edmund DeMarche and the Associated Press contributed to this report