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It’s a disturbing “game” that’s terrorizing residents in some Brooklyn communities.

“Knockout,” where a random person is targeted and sucker-punched for no reason other than to knock them unconscious, is a growing trend among bored, clearly misguided, teens.

After a string of attacks in predominately Jewish neighborhoods in Brooklyn, the NYPD is investigating the incidences as possible hate crimes.

The most recent attack was caught on surveillance video this past Tuesday in Crown Heights. Ten men spotted a man walking alone, punched him and kept on moving.

Police Commissioner Ray Kelly says the NYPD is working to see if all these attacks are in fact connected.