Footage shows moment Ian Tomlinson was pushed to the ground
19 July 2012 Last updated at 15:47 BST
Video footage from the G20 protests in London on 1 April 2009 shows Ian Tomlinson being turned away from a line of officers in Royal Exchange Passage, in London and struck with a baton before being pushed over.
Mr Tomlinson, 47, who was walking home from work, suffered a heart attack several minutes after walking away from the incident.
PC Simon Harwood was found not guilty of manslaughter.
Footage courtesy Guardian.co.uk