A man was killed and a woman was injured in a shooting on the Fourth of July in Trenton, authorities said. Police were called to the 800 block of Stuyvesant Avenue around 11:30 p.m. for a report of a shooting in progress, authorities said. Officers found a man, identified Friday as 32-year-old city resident Amir Williams, shot multiple times in the torso, according to a release from the Mercer County Prosecutor’s Office. Williams was taken to Capital Health Regional Medical Center where he was pronounced dead a short time later, the office said. During the investigation, a second shooting vict…