Horrific incident is captured on video of an innocent man being beaten mercilessly by NYPD officers in uniform.BLOW BY BLOW: Officer Maurice Harrington is caught on video whacking Michael Cephus with a baton while another cop handcuffs the suspect before they finally subdue him.The victim screams in agony as the police officer inflicts savage blows to his legs with a baton, also known as a bat, causing extreme pain and bleeding while crying out his arm has been injured.