Footage of police beating an innocent basketball fan unconscious as he was celebrating a win by his college team has sent shockwaves through America
University of Maryland student innocent basketball fan unconscious was attacked after their victory over arch rivals Duke.
CCTV pictures show him skipping down the street waving his arms in joy.
He is then approached by police on horseback who stand over him before other cops in riot gear swoop and start hitting him with their batons.
Police initially claimed Mr McKenna had attacked their officers and horses, causing them "minor injuries", as they responded to reports of trouble after the game.