A documentary filmmaker engaged in a heated debate surrounding his new film, which contends that Michael Brown did not rob a Ferguson, Mo. convenience store prior to his ultimately fatal 2014 encounter with Officer Darren Wilson.

As FoxNews.com previously reported:

A documentary shown at film festival South by Southwest in Austin, Texas suggests that Brown traded a bag of marijuana for the cigarillos he was alleged to have stolen. It claims he left them behind on the counter and came back to pick them up the day he allegedly robbed the store. Filmmaker Jason Pollock states, "Mike did not rob the store." Attorney Jay Kanzler said the interaction shown in the film was edited down from 4 minutes to 30 seconds and disputes the claims made by filmmaker Jason Pollock. The unedited surveillance footage appears to show store clerks rejecting Brown’s offer of marijuana in exchange for sodas and cigarillos. The footage, which was shown from four different angles, shows Brown leaving the store with the marijuana and leaving sodas and cigarillos behind on the counter. Clerks were seen putting the items back before closing. “The entire story is preposterous and laughable,” said Kanzler. “(The filmmaker) owes an apology to the store owner, the community of Ferguson, and the police officers who put their lives on the line because of his recklessness.”

Jason Pollock said on "The First 100 Days" the footage he features in the film "Stranger Fruit" would change the narrative about Brown, who was shot and killed by Wilson after an altercation in the street.

Law enforcement officials said the footage used is irrelevant because Wilson stopped Brown for walking in the middle of a street, not for suspicion of committing a robbery.

"There are people with so much bias inside of them that they think that Michael Brown was a bad guy," Pollock said, "These cops get off [not guilty] every single time."

"They failed him. They all failed." A fiery interview with @Jason_Pollock on the police shooting of Michael Brown. https://t.co/Nf5y1s2v8n pic.twitter.com/SOmRTPcPyG — Fox News (@FoxNews) March 14, 2017

Pollock criticized Saint Louis County Prosecuting Attorney Robert McCulloch for not overseeing one successful prosecution of a police officer in his two decades in his position.

Martha MacCallum noted that 40 FBI agents were dispatched to Ferguson following the incident, and that then-Attorney General Eric Holder visited as well.

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"My film will show the public the truth," Pollock responded.

After the interview, McCulloch told MacCallum that Pollock "has his facts wrong."

"He's making up facts as he goes along, to push his film," McCulloch said.

Watch the clip above and McCulloch's response below: