It comprises all the institutions within government(local, state and federal) that have contact with the accused from the moment of making the criminal laws all the way through incarceration and parole or probation. Example: A law was enacted making it a criminal offense to steal property of another. John was arrested by local authorities and tried and convicted at a local trial. He was represented by a criminal defense lawyer. He was sentenced to 14 months in the federal prison followed by 36 months of parole. He appealed the conviction and sentence unsuccessfully and was incarcerated. While in prison he underwent many psychological tests. He served his time and completed his parole.
All the people John had contact with and those that wrote the criminal code are part of the criminal justice system. Hope that helps.
Yes you do. The reason for the confidential petition addendum is to include sensitive information like SSNs, Credit Card Numbers, etc. that are usually on the Stipulation/Separation Agreement and/or the Complaint and Final Decree. Those documents are public records, so anyone digging into your file will be able to obtain enough information to steal your identity. It's really not a complicated form at all.