Answer:
Early police in the United States
The United States inherited England’s Anglo-Saxon common law and its system of social obligation, sheriffs, constables, watchmen, and stipendiary justice. As both societies became less rural and agrarian and more urban and industrialized, crime, riots, and other public disturbances became more common. Yet Americans, like the English, were wary of creating standing police forces. Among the first public police forces established in colonial North America were the watchmen organized in Boston in 1631 and in New Amsterdam (later New York City) in 1647. Although watchmen were paid a fee in both Boston and New York, most officers in colonial America did not receive a salary but were paid by private citizens, as were their English counterparts.
In the frontier regions of the United States in the late 18th and early 19th centuries, there arose a novel form of the Saxon tradition of frankpledge: the vigilante. In areas where a formal justice system had yet to be established or the rudimentary policing apparatus had proved inadequate in the face of rampant crime, it was not uncommon for citizens (called “regulators”) to band together in “committees of vigilance” to combat crime and to introduce order where none existed. This socially constructive form of vigilantism—lawlessness on behalf of lawfulness—and the question of when and where it degenerated into rank mob rule have been popular topics in American historiography.