Several Chicago Cubs fans tried to beat the hell out of each other in the bleacher seats at Wrigley on Tuesday night -- and the wild scene was all captured on video!!
The melee went down at some point during the Cubs' tilt with the White Sox ... when, for some reason, Cubbies fans turned on each other and began whaling on each other.
In a clip of the fracas, shot by a bystander near the action, you can see as one fan had another pinned to the ground -- another Cubs supporter was kicking another guy in the head.