Private law enforcement and order maintenance have usually been seen as working against or outside of state authority. A History of Private Policing in the United States surveys private policing since the 1850s to the present, arguing that private agencies have often served as a major component of authority in America as an auxiliary of the state. Wilbur R. Miller defines private policing broadly to include self-defense, stand your ground laws, and vigilantism, as well as private detectives, security guards and patrols from gated community security to the Guardian Angels. He also covers...