Video showing an NYPD officer striking a Brooklyn teenager and leaving him unconscious has emerged.  According to the Daily Intelligencer, Marcel Hamer’s family released the footage, which shows a plainclothes officer knocking the 17-year-old out on Jun. 4 while he’s lying in the street. Hamer can be seen insisting that he was simply smoking a cigarette, and his attorneys told the Brooklyn Paper that he was only charged for disorderly conduct, not anything marijuana-related.