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Peace Officer

A peace officer or law enforcement officer (LEO[1]) in North America is any public-sector employee or agent whose duties primarily involve the enforcement of laws. The phrase can include police officers, corrections officers, customs officers, state troopers, special agents, immigration officers, court bailiffs, probation officers, parole officers, arson investigators, auxiliary officers, and sheriffs, marshals, and their deputies. Security guards are not normally law enforcement officers, unless they have been granted powers to enforce particular laws, such as those accredited under a Community Safety Accreditation Scheme.

Modern legal codes use the term peace officer (or in some jurisdictions, law enforcement officer) to include every person vested by the legislating state with law-enforcement authority – traditionally, anyone "sworn, badged, and armable" who can arrest, or refer such arrest for a criminal prosecution. Hence, city police officers, county sheriffs' deputies, and state troopers are usually vested with the same authority within a given jurisdiction. Contract security officers may enforce certain laws and administrative regulations, which may include detainment or apprehension authority.

Functions of law enforcement officers

In today’s society, enforce laws. Peacekeeping comes into view when big events occur with large groups of people. Crime prevention is a combination of both law enforcement and peacekeeping. Police are an essential part in society to make sure we are safe and stay safe. One of the most visible way police maintain order in society is law enforcement.

The 3 main functions of law enforcement include: 1. community protection- protecting a community or town/city from violent or dangerous crimes 2.service- to serve a population by eliminating high-profile offenders and ensuring the safety of said population 3. deterrence- to deter criminals and crimes from occurring by showing a highly visible police presence.

Law enforcement is the simplest way police keep order; the name says it all. Law police maintain order in several functions that include law enforcement, peacekeeping/order maintenance, and crime prevention. Law enforcement is the basic everyday way to enforcement is enforcing laws that society has. Law enforcement officer conduct many tasks that include enforcing traffic laws, making arrests, conducting surveillance and patrolling. This concept breaks down into two parts. There is full enforcement which is complete enforcement of all laws in conjunction with constitutional standards. In simple terms, full enforcement is giving a citation or arrest with every single law violation. Then there is selective enforcement were police enforce some of the laws some of the time against some people. Selective enforcement involves police discretion, which is their judgment on whether and how to intervene. Law enforcement involves a lot but it’s not the only thing police do.

Peacekeeping and Order maintenance are other ways police keep order. The basic ideas for these two are to prevent behaviors that threaten the public order. Peacekeeping functions would include thing such as a loud noise complaint or forcing a vagrant to leave the area. Order maintenance requires interpretation of laws, decisions on proper conduct, and blame giving. These would come into play in such events like a fight, controlling a crowd, and domestic dispute. This is an important part of Law enforcement although discretion can be used in these situations as well. These situations are more service related than crime related. By service we mean that this is a duty that helps with or enhances community oriented policing. After saying that, peace and order maintenance are more the service orientated part of policing. Though being more service orientated these two police functions are very important. When you put peace and order maintenance with law enforcement you get the next function.

Crime prevention is closely related both law enforcement and order maintenance. This is because if peace is kept through those two, crime is probably prevented. This function is one way for police to be proactive rather than reactive. The ideal idea of crime prevention is to attempt to eliminate potentially dangerous and criminal situations. Being highly visible is one way many believe will help crimes from happening. Crime prevention can make the difference between saving a life and someone losing their life. Community policing is involved with this function because the community knows what the problems are and possible ways to solve them. The underlying problem with crime prevention is that not all crime can be prevented. Crime comes along with social and economic problems which police cannot control. This is why one hundred percent crime prevention is not possible. Though not all crime can be prevented, crime prevention is still a good function of police.


In Canada, the Criminal Code (R.S., c. C-34, s. 2.) defines a peace officer as:

"Peace officer" includes

  • (b) a member of the Correctional Service of Canada who is designated as a peace officer pursuant to Part I of the Corrections and Conditional Release Act, and a warden, deputy warden, instructor, keeper, jailer, guard and any other officer or permanent employee of a prison other than a penitentiary as defined in Part I of the Corrections and Conditional Release Act,
  • (c) a police officer, police constable, bailiff, constable, or other person employed for the preservation and maintenance of the public peace or for the service or execution of civil process,
  • (d) an officer within the meaning of the Customs Act, the Excise Act or the Excise Act, 2001, or a person having the powers of such an officer, when performing any duty in the administration of any of those Acts,
  • (e) a person designated as a fishery guardian under the Fisheries Act when performing any duties or functions under that Act and a person designated as a fishery officer under the Fisheries Act when performing any duties or functions under that Act or the Coastal Fisheries Protection Act,
  • (f) the pilot in command of an aircraft
    • (i) registered in Canada under regulations made under the Aeronautics Act, or
    • (ii) leased without crew and operated by a person who is qualified under regulations made under the Aeronautics Act to be registered as owner of an aircraft registered in Canada under those regulations, while the aircraft is in flight, and
  • (g) officers and non-commissioned members of the Canadian Forces who are
    • (i) appointed for the purposes of section 156 of the National Defence Act, (Military Police) or
    • (ii) employed on duties that the Governor in Council, in regulations made under the National Defence Act for the purposes of this paragraph, has prescribed to be of such a kind as to necessitate that the officers and non-commissioned members performing them have the powers of peace officers;

Section (b) allows for designation as a peace officer for a member of the Correctional Service of Canada under the following via the Corrections and Conditional Release Act:[2]

  • 10. The Commissioner may in writing designate any staff member, either by name or by class, to be a peace officer, and a staff member so designated has all the powers, authority, protection and privileges that a peace officer has by law in respect of
  • (a) an offender subject to a warrant or to an order for long-term supervision; and
  • (b) any person, while the person is in a penitentiary.

In addition, provincial legislatures can designate a class of officers (i.e. Conservation Officers and Park Rangers) to be peace officers.

United States


U.S. Law Enforcement Officers include (but may not be limited to) the following:[3][4]

  1. Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) agents
  2. Bureau of Diplomatic Security special agents
  3. Constables and deputy constables
  4. Customs and Border Protection officers
  5. District Attorney and Prosecuting Attorney investigators
  6. Drug Enforcement Administration (DEA) agents
  7. Federal air marshals
  8. Federal Bureau of Investigation (FBI) agents
  9. Federal Flight Deck Officer
  10. Fire Marshals and deputy fire marshals
  11. Fish and game wardens
  12. Immigration inspectors
  13. Natural resources officers (park rangers and forest rangers)
  14. Office of Mental Health safety/security officers
  15. Police officers
  16. Prison officers
  17. Probation officers
  18. Sheriffs and deputy sheriffs
  19. State Detectives and Investigators
  20. State troopers
  21. Town Marshals and deputy town marshals
  22. U.S. Coast Guard Officers, Warrant Officers, and Petty Officers
  23. United States Border Patrol agents
  24. United States Marshals and deputy marshals
  25. United States Postal Service postal inspectors
  26. United States Secret Service special agents and uniformed officers


Sections 830 through 831.7 of the California Penal Code[5] list persons who are considered peace officers within the State of California. Peace officers include, in addition to many others,

  1. Cal Expo Police Officers (§ 830.2[i])
  2. California State Park rangers. (§ 830.2[f])
  3. Certain employees of the California Department of Motor Vehicles. (§ 830.3[c])
  4. County coroners and deputy coroners. (§ 830.35[c])
  5. Criminal investigators of the Employment Development Department. (§ 830.3[q])
  6. Firefighter/Security Officers of the California Military Department are Peace Officers under PC 830.37
  7. Fraud investigators of the California Department of Insurance. (§ 830.3[i])
  8. Inspectors or investigators employed in the office of a district attorney. (§ 830.1[a])
  9. Investigators of the California Department of Alcoholic Beverage Control. (§ 830.2[h])
  10. Members of the California Highway Patrol. (§ 830.2[a])
  11. Members of the San Francisco Bay Area Rapid Transit District Police Department. (§ 830.33 [a])
  12. Members of the University of California Police Department or the California State University Police Department. (§ 830.2 [b]&[c])
  13. Parole officers and correctional officers of the California Department of Corrections and Rehabilitation. (§ 830.5 [a]&[b])
  14. Members of the Department of State Hospitals. (§ 830.38)
  15. Police; sheriffs, undersheriffs, and their deputies. (§ 830.1[a])
  16. Special agents of the California Department of Corrections and Rehabilitation. (§ 830.2[d])
  17. The California Attorney General and special agents and investigators of the California Department of Justice. (§ 830.1[b])
  18. The State Fire Marshal and assistant or deputy state fire marshals. (§ 830.3[e])
  19. Welfare fraud investigators employed by the California Department of Social Services and all county welfare departments. (§ 830.35[a])

Most peace officers have jurisdiction throughout the state, but many have limited powers outside their political subdivision. Some peace officers require special permission to carry firearms. Powers are often limited to performance of peace officers’ primary duties (usually, enforcement of specific laws within their political subdivision); however, most have power of arrest anywhere in the state for any public offense[6] that poses immediate danger to person or property.

A private person (i.e., ordinary citizen) may arrest another person for an offense committed in the arresting person’s presence, or if the other person has committed a felony whether or not in the arresting person’s presence (Penal Code § 837),[7] though such an arrest when an offense has not actually occurred leaves a private person open to criminal prosecution and civil liability for false arrest. A peace officer may:

  • without an arrest warrant, arrest a person on probable cause that the person has committed an offense in the officer’s presence, or if there is probable cause that a felony has been committed and the officer has probable cause to believe the person to be arrested committed the felony. (Penal Code § 836).[8]
  • Is immune from civil liability for false arrest if, at the time of arrest, the officer had probable cause to believe the arrest was lawful.

Persons are required to comply with certain instructions given by a peace officer, and certain acts (e.g., battery) committed against a peace officer carry more severe penalties than the same acts against a private person. It is unlawful to resist, delay, or obstruct a peace officer in the course of the officer’s duties (Penal Code § 148[a][1]).[9]

New York State

New York State grants peace officers very specific powers under NYS Criminal Procedure Law, that they may make warrantless arrests, use physical and deadly force, and issue summonses under section 2.20 of that law.[10]

There is a full list of peace officers under Section 2.10 of that law.[10] Below are some examples.

  1. That state has law enforcement agencies contained within existing executive branch departments that employ sworn peace officers to investigate and enforce laws specifically related to the department. Most often, these departments employ sworn Investigators (separate from the New York State Police) that have state-wide investigative authority pursuant to the departments mission.
  2. The New York State Bureau of Narcotic Enforcement (BNE) is a state investigative agency housed under the State Department of Health. Narcotic Investigators with the Bureau of Narcotic Enforcement are sworn peace officers who carry firearms, make arrests, and enforce the New York State Controlled Substances Act, New York State Penal Law, and New York State Public Health Law.
  3. The New York State Department of Taxation and Finance employs sworn peace officers as Excise Tax Investigators and Revenue Crimes Investigators. These State Investigators carry firearms, make arrests, and enforce New York State Penal Law related to tax evasion and other crimes. Excise Tax Investigators may execute Search Warrants.
  4. The New York State Department of Motor Vehicles (DMV) Division of Field Investigation also employ sworn peace officers as State Investigators. All DMV Investigators carry Glock 23 firearms and enforce New York State Penal Law and Vehicle and Traffic Law. The DMV Division of Field Investigation investigates auto theft, odometer tampering, fraudulent documents and identity theft crimes.
  5. Private corporations can also register their employees as peace officers with the state Division of Criminal Justice Services. example is the resident-owned RiverBay Corporation's Co-op City Department of Public Safety in New York City which, as of 2008, employs more than 100 public safety officers that are sworn as Special Patrolmen.[11]
  6. Auxiliary Police officers in New York State are registered as peace officers with the Division of Criminal Justice (DCJS). One example is the NYPD Auxiliary Police in New York City which, as of 2008, has more than 4,500 Auxiliary Police officers who are registered by DCJS as "Part Time Peace Officers without Firearms Training", and are registered as peace officers in the DCJS registry of peace officers.[12]


Texas Statutes,[13] Code of Criminal Procedure, Art. 2.12, provides:

Art. 2.12, WHO ARE PEACE OFFICERS. The following are peace officers:

(1) sheriffs, their deputies, and those reserve deputies who hold a permanent peace officer license issued under Chapter 1701, Occupations Code;
(2) constables, deputy constables, and those reserve deputy constables who hold a permanent peace officer license issued under Chapter 1701, Occupations Code;
(3) marshals or police officers of an incorporated city, town, or village, and those reserve municipal police officers who hold a permanent peace officer license issued under Chapter 1701, Occupations Code;
(4) rangers and officers commissioned by the Public Safety Commission and the Director of the Department of Public Safety;
(5) investigators of the district attorneys', criminal district attorneys', and county attorneys' offices;
(6) law enforcement agents of the Texas Alcoholic Beverage Commission;
(7) each member of an arson investigating unit commissioned by a city, a county, or the state;
(8) officers commissioned under Section 37.081, Education Code, or Subchapter E, Chapter 51, Education Code;
(9) officers commissioned by the General Services Commission;
(10) law enforcement officers commissioned by the Parks and Wildlife Commission;
(11) airport police officers commissioned by a city with a population of more than 1.18 million that operates an airport that serves commercial air carriers;
(12) airport security personnel commissioned as peace officers by the governing body of any political subdivision of this state, other than a city described by Subdivision (11), that operates an airport that serves commercial air carriers;
(13) municipal park and recreational patrolmen and security officers;
(14) security officers and investigators commissioned as peace officers by the comptroller;
(15) officers commissioned by a water control and improvement district under Section 49.216, Water Code;
(16) officers commissioned by a board of trustees under Chapter 54, Transportation Code;
(17) investigators commissioned by the Texas Medical Board;
(18) officers commissioned by the board of managers of the Dallas County Hospital District, the Tarrant County Hospital District, or the Bexar County Hospital District under Section 281.057, Health and Safety Code;
(19) county park rangers commissioned under Subchapter E, Chapter 351, Local Government Code;
(20) investigators employed by the Texas Racing Commission;
(21) officers commissioned under Chapter 554, Occupations Code;
(22) officers commissioned by the governing body of a metropolitan rapid transit authority under Section 451.108, Transportation Code, or by a regional transportation authority under Section 452.110, Transportation Code;
(23) investigators commissioned by the attorney general under Section 402.009, Government Code;
(24) security officers and investigators commissioned as peace officers under Chapter 466, Government Code;
(25) an officer employed by the Department of State Health Services under Section 431.2471, Health and Safety Code;
(26) officers appointed by an appellate court under Subchapter F, Chapter 53, Government Code;
(27) officers commissioned by the state fire marshal under Chapter 417, Government Code;
(28) an investigator commissioned by the commissioner of insurance under Section 701.104, Insurance Code;
(29) apprehension specialists and inspectors general commissioned by the Texas Youth Commission as officers under Sections 61.0451 and 61.0931, Human Resources Code;
(30) officers appointed by the inspector general of the Texas Department of Criminal Justice under Section 493.019, Government Code;
(31) investigators commissioned by the Commission on Law Enforcement Officer Standards and Education under Section 1701.160, Occupations Code;
(32) commission investigators commissioned by the Texas Private Security Board under Section 1702.061(f), Occupations Code;
(33) the fire marshal and any officers, inspectors, or investigators commissioned by an emergency services district under Chapter 775, Health and Safety Code;
(34) officers commissioned by the State Board of Dental Examiners under Section 254.013, Occupations Code, subject to the limitations imposed by that section; and
(35) investigators commissioned by the Texas Juvenile Probation Commission as officers under Section 141.055, Human Resources Code.

See also



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