It’s been dubbed the New York Miracle. Bill Bratton, who returned to his former job as the city’s police commissioner in January, says he wants Los Angeles, Chicago and London to experience it too.

He’s talking about a 23-year span in which major crime fell almost 80 percent, creating an aura of safety that was key to revitalizing the five boroughs. The revolution he kicked off, carried on by successors including Raymond Kelly, helped boost housing prices from Harlem to Brooklyn and attract a record 54 million tourists who pumped $58.7 billion into the local economy last year.

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