Atlanta Falcons fan steps on man's head during violent brawl at Saints game

The stands at Sunday's Saints vs. Falcons game more closely resembled the inside of a UFC Octagon … as several people were involved in violent brawls.

One of the most frightening incidents occurred upstairs at the Mercedes-Benz Stadium in Atlanta when about four men started scuffling with each other.

Video of the scene captured by a bystander shows two men wrestling for some seats… a man wearing a Falcons No. 11 jersey trying to beat up a guy in a red shirt just feet away.

Suddenly, the ATL fan kicked the man on the ground so hard that he appeared to fall unconscious. But the guy didn't let up after that punch – as you can see in the footage, he continued to brutally kick his opponent's head repeatedly.

Meanwhile, the other two men did their sparring training on another row of seats – before the video stopped.

There was more action in the stands during another part of the game – when a shirtless man's taunts against a man in a tank top sparked a fistfight.

Video of this scene shows the two guys – and another man – attacking each other for several moments… before others in the area mercifully restrain them.