This is the incident in the video below when news vendor, Ian Tomlinson, was attacked and thrown to the pavement by a thug police officer, PC Simon Harwood, a member of the Metropolitan Police's territorial support unit, and a few minutes later he collapsed and died.
The (government-controlled) Crown Prosecution Service (CPS) says that, despite two other pathologist reports contradicting the corrupt one, they would be unable to secure a conviction against the officer.
