Horrific footage captured the moment a madman fatally stabbed a Ukrainian refugee from behind as she sat on a train in North Carolina. The sickening attack unfolded on August 22, soon after Iryna Zarutska, 23, boarded a South End light rail train in Charlotte. Cops identified the stabber as homeless man Decarlos Brown Jr., 35, who has a lengthy rap sheet, including an arrest for assaulting his sister. He was seen in the footage watching Zarutska for some time after she sat in the seat in front of him, eventually taking out what appeared to be a blade from his...