The modern criminal justice system has evolved since ancient times, with new forms of punishment, added rights for offenders and victims, and policing reforms. These developments have reflected changing customs, political ideals, and economic conditions. In ancient times through the middle Ages, exile was a common form of punishment. During the Middle Ages, payment to the victim (or the victim's family), known as wergild, was another common punishment, including for violent crimes. For those who could not afford to buy their way out of punishment, harsh penalties included various forms of corporal punishment. These included mutilation, branding, and flogging, as well as execution. Though a prison, Le Stinche, existed as early as the 14th century in Italy, incarceration was not widely used until the 19th century. Correctional reform in the United States was first initiated by William Penn, towards the end of the 17th century. For a time, Pennsylvania's criminal code was revised to forbid torture and other forms of cruel punishment, with jails and prisons replacing corporal punishment. These reforms were reverted, upon Penn's death in 1718. Under pressure from a group of Quakers, these reforms were revived in Pennsylvania toward the end of the 18th century, and led to a marked drop in Pennsylvania's crime rate. Patrick Colquhoun, Henry Fielding and others led significant reforms during the late eighteenth and early nineteenth centuries. Definition
Criminal justice is the system of practices and institutions of governments directed at upholding control, deterring and mitigating crime, or sanctioning those who violate laws with criminal penalties and rehabilitation efforts. Those accused of crime have protections against abuse of investigatory and prosecution powers.
The criminal justice system consists of three main parts: (1) Legislative (create laws); (2) adjudication (courts); and (3) corrections (jails, prisons, probation and parole). In the criminal justice system, these distinct agencies operate together both under the rule of law and as the principal means of maintaining the rule of law within society. Policing
The first contact an offender has with the criminal justice system is usually with the police (or law enforcement) who investigate the suspected wrongdoing and make an arrest, but if the suspect is dangerous to the whole nation, a national level law enforcement agency is called in . When warranted, law enforcement agencies or police officers are empowered to use force and other forms of legal coercion and means to effect public and social order. The term is most commonly associated with police departments of a state that are authorized to exercise the police power of that state within a defined legal or territorial area of responsibility. The word comes from the Latin politia ("civil administration"), which itself derives from the Ancient Greek πόλις, for polis ("city").The first police force comparable to the present-day police was established in 1667 under King Louis XIV in France, although modern police usually trace their origins to the 1800 establishment of the Marine Police in London, the Glasgow Police, and the Napoleonic police of Paris. Police are primarily concerned with keeping the peace and enforcing criminal law based on their particular mission and jurisdiction. Formed in 1908 the Federal Bureau of Investigation began as an entity which could investigate and enforce specific federal laws as an investigative and "law enforcement agency" in the United States; this, however, has constituted only a small portion of overall policing activity. Policing has included an array of activities in different contexts, but the predominant ones are concerned with order maintenance and the provision of services. Courts
Courts of Law
The courts serve as the venue where disputes are then settled and justice is administered. With regard to criminal justice, there...