The United States Park Police (USPP) is the oldest uniformed federal law enforcement agency in the United States. It functions as a full-service law enforcement agency with responsibilities and jurisdiction in those National Park Service areas primarily located in the Washington, D.C., San Francisco, and New York City areas and certain other government lands. United States Park Police officers have jurisdictional authority in the surrounding metropolitan areas of the three cities it primarily operates in, meaning they possess both state and federal authority. In addition to performing the normal crime prevention, investigation, and apprehension functions of an urban police force, the Park Police are responsible for policing many of the famous monuments in the United States.
Railroad police or railway police are people responsible for the protection of railroad properties, facilities, revenue, equipment, and personnel, as well as carried passengers and cargo. Railroad police may also patrol public rail transit systems.
Transit police are specialized police agencies employed either by a common carrier, such as a transit district, railway, railroad, bus line, or another mass transit provider or municipality, county, district, or state.
Security police usually describes a law enforcement agency which focuses primarily on providing security and law enforcement services to particular areas or specific properties. They may be employed by governmental, public, or private institutions. Security police are generally considered distinct from security guards as security police personnel typically hold some level of law enforcement authority. The exact powers held by security police vary widely between jurisdictions. Examples of these types of agencies include the U.S. FBI Police, the Indian Central Industrial Security Force, and the British Civil Nuclear Constabulary.
Special police usually describes a police force or unit within a police force whose duties and responsibilities are significantly different from other forces in the same country or from other police in the same force, although there is no consistent international definition. A special constable, in most cases, is not a member of a special police force (SPF); in countries in the Commonwealth of Nations and often elsewhere, a special constable is a voluntary or part-time member of a national or local police force or a person involved in law enforcement who is not a police officer but has some of the powers of a police officer.
The Federal Protective Service (FPS) is a federal law enforcement agency of the United States Department of Homeland Security (DHS). It is also "the federal agency charged with protecting and delivering integrated law enforcement and security services to facilities owned or leased by the General Services Administration (GSA)"—over 9,000 buildings—and their occupants.
The Metropolitan Police Department of the District of Columbia (MPDC), more commonly known as the Metropolitan Police Department (MPD), the DC Police, and, colloquially, the DCPD, is the primary law enforcement agency for the District of Columbia, in the United States. With approximately 3,400 officers and 600 civilian staff, it is the sixth-largest municipal police department in the United States. The department serves an area of 68 square miles (180 km2) and a population of over 700,000 people. Established on August 6, 1861, the MPD is one of the oldest police departments in the United States. The MPD headquarters is at the Henry J. Daly Building, located on Indiana Avenue in Judiciary Square across the street from the District of Columbia Court of Appeals and the Superior Court of the District of Columbia. The department's mission is to "safeguard the District of Columbia and protect its residents and visitors with the highest regard for the sanctity of human life". The MPD's regulations are compiled in title 5, chapter 1 of the District of Columbia Code.
The United States Capitol Police (USCP) is a federal law enforcement agency in the United States with nationwide jurisdiction charged with protecting the United States Congress within the District of Columbia and throughout the United States and its territories. It answers to the Capitol Police Board and is the only full-service federal law enforcement agency appointed by the legislative branch of the federal government of the United States.
A police academy, also known as a law enforcement training center, police college, or police university, is a training school for police cadets, designed to prepare them for the law enforcement agency they will be joining upon graduation, or to otherwise certify an individual as a law enforcement officer, typically a police officer.
Crime in Washington, D.C., is directly related to the city's demographics, geography, and unique criminal justice system. The District's population reached a peak of 802,178 in 1950. Shortly after that, the city began losing residents, and by 1980 Washington had lost one-quarter of its population. The population loss to the suburbs also created a new demographic pattern, which divided affluent neighborhoods west of Rock Creek Park from the less well-off neighborhoods to the east.
The Supreme Court of the United States Police is a federal law enforcement agency that derives its authority from 40 U.S.C. § 6121. The Supreme Court Police enforces federal and District of Columbia laws and regulations, as well as enforces regulations governing the Supreme Court Building and grounds prescribed by the marshal and approved by the Chief Justice of the United States. The department's mission is to ensure the integrity of the constitutional mission of the Supreme Court of the United States by protecting the Supreme Court, the justices, employees, guests, and visitors.
Company police, also called private police, are privately paid law enforcement officers who work for private security companies or private military companies rather than a municipal, county, state, or national agency.
Private police or special police are law enforcement bodies that are owned and/or controlled by non-governmental entities. Additionally, the term can refer to an off-duty police officer while working for a private entity, providing security, or otherwise law enforcement-related services. These officers do have power to uphold the laws under the discretion of the private company.
The Smithsonian Institution Office of Protection Services is the guard force of the Smithsonian Institution.
The District of Columbia Protective Services Division is a division of the Department of General Services of the District of Columbia Government. The organization is responsible for "law enforcement activities and physical security of all properties owned, leased or otherwise under the control of the Government of the District of Columbia."
The District of Columbia has a mayor–council government that operates under Article One of the United States Constitution and the District of Columbia Home Rule Act. The Home Rule Act devolves certain powers of the United States Congress to the local government, which consists of a mayor and a 13-member council. However, Congress retains the right to review and overturn laws created by the council and intervene in local affairs.
United States Department of Defense Police are the uniformed civilian police officers of the United States Department of Defense, various branches of the United States Armed Forces, or specific DoD activities.
Patrick Vincent Murphy served as the top law enforcement executive in New York City, Detroit, Washington, DC, and Syracuse, NY. He created the Police Executive Research Forum, an organization of police executives from the nation's largest city, county, and state law enforcement agencies, and led the Police Foundation in a period when it published pivotal reports on issues ranging from the police use of deadly force to the efficient use of patrol resources. Murphy's "long-range impact on American policing nationally probably will be judged by students of police history as significant as that of August Vollmer or J. Edgar Hoover," the FBI's Law Enforcement Bulletin commented in a 1986 cover story on the Police Foundation.
The Georgetown University Police Department (GUPD) is a campus police department responsible for providing security and law enforcement for Georgetown University's main campus and Medical Center in Washington, D.C., as well as properties owned by the university.
