The precipitous decline began when police acknowledged that the only way to stem the tide of violence was to tackle the culture that spawned it, says John Carnochan, a former Glasgow murder detective involved in setting up the VRU. While young men grew up in unstable, violent homes, joined gangs, carried knives, drank and fought, death and mayhem was almost inevitable.via Glasgow smiles: how the city halved its murders by 'caring people into change' | Cities | The Guardian.