A construction worker in North Carolina begged his mother for help on Facebook Live before he died in a huge fire at a partially built apartment complex, his family say.Father of four Demonte Sherill, 30, was one of two workers unaccounted for after the fire at the SouthPark Mall in Charlotte on Thursday.His mother Onita Sherrill told WSOC she watched her son’s final moments alive on a Facebook Live video call as he pleaded for help.“I was hoping but just from the (Facebook Live), and the way the room filled up with smoke, I didn’t see it being any...