Watch a man kill another man with one single punch

                      40 year old autistic man Andrew Young (pictured below) died from a single blow to the head by Lewis Gill, 20, (pictured above) in November 2013. Lewis killed Young with a single punch in an unprovoked attack captured on CCTV after Young challenged Lewis' friend for riding a bike on the pavement in the Charminster area of Bournemouth. Lewis pleaded guilty to manslaughter and was sentenced to only four years for the crime last Friday. Watch the graphic video after the cut...but be warned that the video contains scenes of violence that some may find disturbing