ALYSSA POINTER and STEVE GORMAN TYRE Nichols repeatedly cried, "Mom! Mom!” as the five Memphis police officers now charged with the Black motorist's murder pummeled him with kicks, punches and baton blows after a Jan. 7 traffic stop, video released by the city on Friday showed. The video from police body-worn cameras and a camera mounted on a utility pole were posted online a day after the officers were charged with second-degree murder, assault, kidnapping, official misconduct and oppression in Nichols' death. The officers, all Black, were dismissed from the police department last week. Nichols, 29, was hospitalized and died of…