Police on duty are always at risk but the ambush of two constables in Walsh Street, South Yarra, 25 years ago was as random as it was barbaric. The plan that morning was to kill police – any police – as a payback for the death of a gunman shot by armed robbery squad detectives 13 hours earlier. To older officers this was an event frozen in time, to younger ones it is a couple of names on an honour board at the academy and to Victorians it is an event that shaped the community.