Reporting on the ground from the St. Louis suburb, correspondent Steve Harrigan described the scene to anchor Shepard Smith.
"This is right now a media event, pure and simple. This is people running towards tear gas, running away from it," Harrigan said. "The dignified protestors went home at dusk. This is just child’s play right now."
That description didn't sit well with a demonstrator, who angrily confronted Harrigan during the live shot.
"Say that shit! No, say that shit," the man said.
"I'm on TV right now," Harrigan replied.
"I don't give a damn. Ya'll on TV. I don't care about that shit," the man shot back.
"Uh oh," Smith could be heard saying from the Fox studio.
It continued from there. Harrigan tried to defuse the situation, telling the man that he had no interest in arguing. But the man continued to berate the correspondent before walking away.