The assault lasts about 20 seconds and shows shows bikers gathered around Alexian Lien, stomping on him and beating him
(WABC) -- Eyewitness News has obtained new video of the assault on an SUV driver by a group of motorcycle riders last month.
The video, obtained by Eyewitness News reporter Darla Miles, comes from a witness to the incident. Police have seen the video, which we warn you is violent and graphic.
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