The Telegraph / YouTubeA 14-year-old boy died Tuesday after being stabbed in a sword attack in London that hurt several other people, including police officers, local authorities said.The deceased child has not been identified, but his death was confirmed by police after a 36-year-old man was arrested following the disturbing incident in the Hainault area of northeast London. The Metropolitan Police said its officers were first called shortly before 7 a.m. “to reports of a vehicle being driven i