Someone threw a stone through the window, as you can see.
When the man went out to investigate on Sunday night he was attacked, kicked repeatedly and beaten with metal rods. One newspaper says that about a dozen men took part in the beating.
The man ran away but collapsed a short distance away, where he was found and taken to the hospital. He was still there Monday morning with serious but not life-threatening injuries.
While Malmo police have not yet classified it as a hate crime, they do say that their information indicates that he was beaten because of the flag.
Naturally, the media is not speculating on what kind of Malmo residents might have decided to beat a man for displaying a flag in his apartment window.
Between 10% and 20% of Malmo's residents are Muslim. Jews have been harassed, threatened and attacked constantly and many have fled the city for their own safety.
Here is a documentary from last year about the situation.
(h/t Ken S)
UPDATE: The victim's family was born in Iraq and later moved to Iran. He is a Kurd who is fond of Jews and Israel.
(h/t S)