I'll let the links speak for themselves.
Hume: Police park their arrogance for all to see.
G20 case studies: 400 official complaints, little satisfaction.
G20 conspiracy charges dropped against activist
G20 officer tight-lipped at SIU appearance
DiManno: How G20 officer was identified
Keep up the pressure, readers urge
‘Kettling’ police tactic controversial everywhere it was used