A Southern California rapper was fatally shot in Koreatown early Tuesday morning, cops said. Half Ounce, also known as Latauriisha O’Brien, was found suffering from several gunshot wounds in front of an apartment building, according to police. Authorities received calls reporting nearly 30 rounds of gunshots fired near the 700 block of South New Hampshire Avenue. Paramedics pronounced the 33-year-old dead at the scene. Police investigated the crime scene for six hours and gathered information about the alleged shooter being a man in dark clothing who drove off southbound in a dark-colore