Did G20 cops beat Ian Tomlinson to death?

Ian Tomlinson's died of internal bleeding - did G20 cops beat him to death?

A second post-mortem into the death of Ian Tomlinson showed he died from an "abdominal haemorrhage" and not a heart attack.

Photographs have also come to light of Ian apparently remonstrating with officers in a riot van in Lombard Street up to an hour before this footage.