Analysis of 'Barbarians' short story

This short-story is written by an anonymous author and was published in 1991.

1)

The story opens with a presentation of Stanley, the main character. He is a New Yorker who paints on Sundays as some kind of therapy for his mental problems, but unfortunately every Sunday a group of men enters the yard where it's prohibited to play ball. Stanley had complained to a policeman once, but he didn't care.

However, one Sunday in June the men enters the yard very boastfully, worse than ever. At one point, an elderly man opens his window and begins yelling and threatening with calling the police. It doesn’t help though, the respectless men just carry on playing. Two of them wrestles for the ball in the bushes Stanley had planted, and he was beginning to feel anger inside him. He shouts at the men, who hardly notice him and abruptly started drinking beer in a very distasteful manner - that was the drop for Stanley! His uncontrollable rage makes him drop a big stone at the skull of the most annoying player, who sits right below the window. The others get very surprised and try to help Franky, though he was more dead than alive.