Cycle of violence...
I disagree with Q's remarks. There are many, many convicted criminals or registered sex offenders nationwide who were also crime victims, abused children or who had mental health issues.
They in turn, repeated the cycle and lashed out at other members of the public(who had NOTHING to do with them or the abuse).
Look at how child molesters or rapists are treated in some prisons/correctional programs.
Violent behavior is by it's nature anti-social & counter productive. John or Mary citizen in the general public shouldn't be required to have the burden of dealing with a psycotic or unstable subject. That's an issue for the courts & medical professionals.