Video: Man, 33, is viciously beaten with a CHAIR during gang attack that left victim unconscious on New York City sidewalk

Police are trying to track down a gang of thugs who attacked a 33-year-old man, beat him with a chair and knocked him out in a violent beating in Brooklyn, New York City.

The attackers ran after the victim along 1910 Coney Island Avenue at around 4.20pm December 11.

One of the group threw the victim to the ground as seen in video released by the New York Police Department.