If group liability works for lending, maybe it works for crime?

The police officer explained that while conventional deterrence hadn’t worked, he had begun to persuade gangs to behave by issuing a credible threat: namely, that when a gang attracted attention with notorious acts of violence, the entire gang — all of whose members likely had outstanding warrants or probation, parole or traffic violations — would be rounded up.

New techniques in crime deterrence, in the NYT Sunday Magazine.

One of the other techniques said to be important: that criminals consider the punishments fair, equitable and transparent.