A more thorough explanation:

The justice system refers to the various agencies, establishments, and institutions that are responsible for enforcing the law. These agencies are primarily organized around handling either civil or criminal law.

The criminal justice system is the most commonly referred to system and includes law enforcement, courts, and correctional institutions. It is responsible for investigating and prosecuting crimes, as well as punishing those who are found guilty.

It is important to note that the justice system is not the same as the judicial system. The judicial system refers specifically to the federal and state courts that make up the judicial branch of government.

• A police officer arresting someone for breaking the law is part of the justice system.
• A judge presiding over a criminal trial is part of the judicial system.
• A prison where convicted criminals serve their sentences is part of the justice system.

These examples illustrate how different parts of the justice system work together to enforce the law and ensure that justice is served. The police investigate crimes and make arrests, the courts determine guilt or innocence, and the correctional institutions carry out the sentences handed down by the courts.