Vince Li has been found not criminally responsible in the unprovoked killing and beheading of fellow passenger Timothy McLean on a Greyhound bus last summer. Manitoba Court of Queen's Bench Judge John Scurfield said Thursday that Li, 40, could not be found guilty of murder and is not criminally responsible for the crime because he was mentally ill at the time of the killing. "These grotesque acts are appalling... but are suggestive of a mental disorder," the judge said. "He did not appreciate the act he committed was wrong." Li had pleaded not guilty to a charge of second-degree murder....