Laypersons have traditionally thought of the criminal justice system as being in the business of doing justice: punishing offenders for the crimes they commit. Yet during the past several decades, the justice system\u27s focus has shifted from punishing past crimes to preventing future violations through the incarceration and control of dangerous offenders. Habitual-offender statutes, such as three strikes laws, authorize life sentences for repeat offenders. Jurisdictional reforms have decreased the age at which juveniles may be tried as adults. Gang membership and recruitment are now punished. Megan\u27s Law statutes require community notification of convicted sex offenders. Sexual predator statutes provide for the civil detention of...