Malcolm Gladwell talks about the law of criminal concentration.
He says that crime and suicide (on the Golden Gate bridge) are coupled and do not result in displacement.
(40:50 min) Of the 515 people who attempted suicide on the Golden Gate bridge, only 25 attempt again in another way.
(42:40 min) Most police deny that the law of criminal concentration exists. They deploy stop-and-frisk too broadly. There are no “bad neighborhoods”. There are only “bad blocks”.