Footage from Chicago of a fight outside a children's party at a branch of restaurant chain Chuck E. Cheese.
The video, shot on September 10 2016, shows two men throwing punches at one another while others are trying to stop them.
Inside a children's party was taking place, according to the filmer.
He writes: "The adults were 'courteous' enough to wait until they got outside the door to start throwing punches."
