As a group of young people brutally beat a woman who was sitting alone on a park bench in Brooklyn, onlookers watched, video recorded and — in some cases — cheered on the vicious attack.

Though details are very sketchy as to what prompted the beating, a video posted on Facebook Friday clearly shows the group — possibly teenagers — teaming up and attacking an older woman.

Screengrab via NBC New York

Screengrab via NBC New York

“Oh, yeah!” one man is heard shouting.

At another point in the video, it sounds like a man refers to the attackers as his “young hitters.” Others are seen watching in silence.

Not one person is seen on video trying to help the victim or even telling the attackers to stop.

Police are reportedly using the video to investigate the assault. It’s unclear when exactly the attack took place, though officials believe it occurred recently.

NBC New York has the disturbing video (Warning: Strong language and violence)

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