Law enforcement

The concept of law enforcement dates back to ancient times, and forms of law enforcement and police have existed in various forms across many human societies. Modern state legal codes use the term law enforcement officer or peace officer to include every person vested by the legislating state with police power or authority; traditionally, anyone sworn or badged who can arrest any person for a violation of criminal law is included under the umbrella term of law enforcement.

Although law enforcement may be most concerned with the crime prevention and punishment of crimes, organizations exist to discourage a wide variety of non-criminal violations of rules and norms, effected through the imposition of less severe consequences such as probation.

History

Law enforcement organizations existed in ancient times, such as prefects in ancient China, paqūdus in Babylonia, curaca in the Inca Empire, vigiles in the Roman Empire, and Medjay in ancient Egypt. Who law enforcers were and reported to depended on the civilization and often changed over time, but they were typically slaves, soldiers, officers of a judge, or hired by settlements and households. Aside from their duties to enforce laws, many ancient law enforcers also served as slave catchers, firefighters, watchmen, city guards, and bodyguards.

By the post-classical period and the Middle Ages, forces such as the Santa Hermandades, the shurta, and the Maréchaussée provided services ranging from law enforcement and personal protection to customs enforcement and waste collection. In England, a complex law enforcement system emerged, where tithings, groups of ten families, were responsible for ensuring good behavior and apprehending criminals; groups of ten tithings ("hundreds") were overseen by a reeve; hundreds were governed by administrative divisions known as shires; and shires were overseen by shire-reeves. In feudal Japan, samurai were responsible for enforcing laws.

The concept of police as the primary law enforcement organization originated in Europe in the early modern period; the first statutory police force was the High Constables of Edinburgh in 1611, while the first organized police force was the Paris lieutenant général de police in 1667. Until the 18th century, law enforcement in England was mostly the responsibility of private citizens and thief-takers, albeit also including constables and watchmen. This system gradually shifted to government control following the 1749 establishment of the London Bow Street Runners, the first formal police force in Britain. In 1800, Napoleon reorganized French law enforcement to form the Paris Police Prefecture; the British government passed the Glasgow Police Act, establishing the City of Glasgow Police; and the Thames River Police was formed in England to combat theft on the River Thames. In September 1829, Robert Peel merged the Bow Street Runners and the Thames River Police to form the Metropolitan Police. The title of the "first modern police force" has still been claimed by the modern successors to these organizations.

Following European colonization of the Americas, the first law enforcement agencies in the Thirteen Colonies were the New York Sheriff's Office and the edit County Sheriff's Department, both formed in the 1660s in the Province of New York. The Province of Carolina established slave-catcher patrols in the 1700s, and by 1785, the Charleston Guard and Watch was reported to have the duties and organization of a modern police force. The first municipal police department in the United States was the Philadelphia Police Department, while the first American state police, federal law enforcement agency was the United States Marshals Service, both formed in 1789. In the American frontier, law enforcement was the responsibility of county sheriffs, rangers, constables, and marshals. The first law enforcement agency in Canada was the Royal Newfoundland Constabulary, established in 1729, while the first Canadian national law enforcement agency was the Dominion Police, established in 1868.

By the 19th century, improvements in technology, greater global connections, and changes in the sociopolitical order led to the establishment of police forces worldwide. National, regional, and municipal civilian law enforcement agencies exist in practically all countries; to promote their international cooperation, the International Criminal Police Organization, also known as Interpol, was formed in September 1923. Technology has made an immense impact on law enforcement, leading to the development and regular use of police cars, police radio systems, police aviation, police tactical units, and police body cameras.