The Liberal Democrats are demanding a criminal inquiry after video footage of the G20 protest showed a police officer pushing over a man who later died.
Newspaper vendor Ian Tomlinson, 47, who was walking home from work, suffered a heart attack afterwards outside the Bank of England in central London.
Lib Dem justice spokesman David Howarth said the footage showed a “sickening and unprovoked attack” by police.
The IPCC is investigating and said it would examine the footage.
Here’s Lib Dem shadow justice secretary David Howarth’s statement on the Guardian video showing a policeman attacking Mr Tomlinson shortly before he died:
This video clearly shows an unprovoked attack by a police officer on a passer by. It is sickening. There must be a full-scale criminal investigation. The officer concerned and the other officers shown in the video must immediately come forward. Questions must also be asked about the hyping up of the prospect of violence in the run up to the demonstrations. An atmosphere was created in which this sort of conduct became more likely.”