Did incapacitation, deterrence, or rehabilitation reduce crime in Baltimore?

The Free Press:

Bates, ``a new tough-on-crime prosecutor, ... replaced a scandal-plagued `progressive.'” '' 

Incapacitation (selection): sometimes referred to as ``specific deterrence.''

Bates said that his office has identified about about 6,000 frequent, violent offenders and put between 3,000 and 3,500 of them in prison. The cooperation of federal law enforcement has helped take a number of these offenders off the streets.

Deterrence (incentives):

...more willingness to process felons in possession of a gun, and a more credible threat of punishment.

Rehabilitation:

“If you’re seeing your friends all going to prison, you’re going to go: ‘What? I don’t want to go to prison,’ ” Bates said. “Now all of a sudden, that job or that program someone’s offered you before that you didn’t want to talk about—now it looks pretty appealing.”