This animation reminds me of the bizzare case in Canada where Vince Weiguang Li, a Chinese immigrant beheaded and cannibalized a Canadian bus passenger in front of other horrified travelers four years ago.
Li, 43, had repeatedly stabbed his victim, who had been asleep on the seat next to him. He cut off the victim's head, removed his internal organs, pocketed his nose, tongue and an ear, and taunted police and bystanders with the severed head.
Li said he was acting on "the voice of God" to kill his victim, whom he believed to be an alien for if he did not do so, he (victim) would kill everyone else.
He was later diagnosed with schizophrenia and was found not guilty of murdering 22 year old Tim McLean on a Canadian Greyhound bus on July 30, 2008.