Should Preventive Detention Be Legal for Repeat Violent Offenders?

PVDO is a proposed method to legally and morally detain dangerous offenders by creating a new offence. People would be tried and convicted of this offence using the usual standards of criminal proof and trial procedures. This offence would be created in order to keep the general population safe. This method is uniquely supportable because it complies with central rule of law values (like predictability, fair warning, and identifying clearly exactly what we are punishing people for), as well as principles of proportionality in sentencing.