video taken by a bystander,poicd williams is seen body slamming a man he d been ticketing for and more like the takedown move by thimixed martial arts fighter, seen here in the blue and white shor. in fact, he is the same guy. in the ring, he s been known add jerald bacon and eggs williams. he s assigned to the area south gang enforcement unit. the body slam victim s family says he s a man with schizophrenia, named bernard kersh, who was unarmed and accused of threatening the officer and trying to lick him. he was knocked unconscious. his mother, quichia johnson, said he s still having headaches. my son could have been killed. he is not doing anything that would provoke such a violent attack. reporter: andrew stroth, is kersh s attorney. it was potentially lethal force.