LES-101 · Lesson 4 of 12 · 20 min

The history of policing: from Peel's principles to today

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Professor Desjardins begins the fourth class by handing out a card with a single sentence on it: the police are the public and the public are the police. It is often attributed to Sir Robert Peel, the British home secretary who created London's Metropolitan Police in 1829, and it hangs on the wall of the Port Ardent Police Service's training room. Jesse reads it twice and says that it does not describe how his grandparents experienced police. Professor Desjardins nods. Both things are true, he says. Modern policing was built on an ideal of consent, and it was also used to enforce laws and policies that many communities never consented to. Understanding that double history is the purpose of this lesson.

Before modern police

For most of history there were no police in the modern sense. In England, order was kept by unpaid parish constables chosen from local householders, by night watchmen of uneven quality and by the hue and cry, the duty of every citizen to chase a criminal. Justices of the peace handled most offences. As cities grew in the eighteenth century, this system broke down. London had hundreds of thousands of residents, crowded slums, gin shops and frequent riots, and the response was mostly private: victims hired thief-takers, who were paid for recovering stolen goods and were often criminals themselves. The novelist and magistrate Henry Fielding formed a small group of paid officers in 1749 that became known as the Bow Street Runners, and in 1798 the Thames River Police was created to protect cargo on the docks. These experiments showed that a paid, organized force could prevent crime rather than merely react to it.

Many people in England nonetheless opposed a professional police. They associated police with the French model, a centralized force used by the state to spy on citizens and suppress dissent. The tension between wanting order and fearing state power is the same tension you met in lesson 1, and it shaped the design of the first modern police.

Peel and the Metropolitan Police

The Metropolitan Police Act of 1829 created a full-time, uniformed, salaried force for London, under two commissioners, Charles Rowan and Richard Mayne. Its founders made deliberate choices to win public acceptance. Officers wore blue coats rather than military red, carried a wooden truncheon rather than a firearm, and were expected to be polite, patient and visible. Their primary task was to prevent crime by patrolling fixed beats, not to catch criminals after the fact. Recruits had to be literate, of good character and fit, and many early recruits were dismissed for drunkenness or misconduct. Londoners called the officers bobbies or peelers after their founder.

The so-called Peelian principles are usually listed as nine statements. The most quoted are that the basic mission of police is to prevent crime and disorder; that police depend on public approval and cooperation; that cooperation diminishes as force is used; that police should use only the minimum force necessary, and only when persuasion and warning fail; that the police are the public and the public are the police; and that the test of police efficiency is the absence of crime and disorder, not the visible evidence of police action in dealing with it. Historians have shown that Peel never wrote this list. It was compiled in the twentieth century by writers drawing on the instructions given to the first officers. The principles remain valuable as a statement of the ideal of policing by consent, even if their history is more complicated than the plaques suggest.

Five of the principles of policing by consent and their modern meaning.
Principle (paraphrased)What it means in practice today
Prevent crime and disorderPatrol, problem-solving and partnerships rather than only responding after harm
Depend on public approvalLegitimacy and procedural justice are operational necessities
Use minimum forceDe-escalation first; force only when persuasion fails, and proportionate
Police are the publicOfficers are citizens in uniform, bound by the same laws, drawn from the community
Measure success by absence of crimeJudge police by safety and trust, not by arrests or tickets

Policing comes to Canada

In New France, a small number of officials kept order in the towns, and after the British conquest English-style constables and watches were adopted. Toronto created a paid police force in 1834, soon after the city was incorporated, and Montreal and Quebec City followed. These early forces were small, often controlled by city politicians and sometimes involved in sectarian conflicts between Protestant and Catholic groups. Over the following decades they became more disciplined and professional, adopting the London model of uniformed beat patrol.

The West developed differently. In 1873 Parliament created the North-West Mounted Police to assert Canadian authority over the lands acquired from the Hudson's Bay Company, end the whisky trade, prepare the way for settlement and the railway, and manage relations with First Nations. Its model was the Royal Irish Constabulary, a centralized, armed force, rather than London's civilian police. The Mounties became a national symbol, celebrated for keeping order during the Klondike gold rush. They also enforced the Indian Act, including the pass system that restricted First Nations people from leaving reserves without permission, and later helped enforce attendance at residential schools, removing children from their families. In 1919 the Royal North-West Mounted Police charged strikers during the Winnipeg General Strike, and in 1920 the force merged with the Dominion Police to become the Royal Canadian Mounted Police. Between 1928 and 1950, most provinces disbanded their provincial police and contracted with the RCMP instead, which explains its contract role today. The Ontario Provincial Police, created in 1909, and the Sûreté du Québec survived.

Timeline of events in Canadian policing from the London Metropolitan Police in 1829 to the Community Safety and Policing Act in 2024, including Toronto police 1834, the North-West Mounted Police 1873, the OPP 1909, the RCMP 1920, the SIU 1990, the First Nations Policing Policy 1991 and reports in 2007, 2014 and 2018
Selected events in the history of policing in Canada, evenly spaced rather than to scale.

Three eras of policing

The researchers George Kelling and Mark Moore described the history of American policing in three eras, a framework that also fits much of Canada's experience. In the political era, from the 1840s to the early 1900s, police were closely tied to local politicians, who hired officers as a reward for loyalty. Officers walked beats, knew their neighbourhoods and provided many social services, such as housing homeless people in station houses, but corruption was widespread and standards were low. In the reform or professional era, from roughly the 1920s to the 1970s, leaders tried to free police from politics by making them efficient, disciplined crime fighters, with centralized command, civil service hiring, training and new technology. In the community problem-solving era, beginning in the late 1970s and 1980s, police tried to rebuild relationships with communities and work with them to solve the problems behind repeated calls.

The professional era brought real gains. Police commissions and boards were created to separate police from day-to-day political control, training became standard, and the Ontario Police College opened in 1962. Patrol cars, two-way radios and later emergency telephone numbers transformed patrol. But the same changes took officers off foot beats and put them in cars racing from call to call, cutting them off from the people they served. Success was measured by response times, arrests and clearance rates, which the community era would later question.

A minority view challenges the three-era story. Writing in 1990, Hubert Williams, a former police chief, and Patrick Murphy argued that the eras look very different from the perspective of Black Americans, for whom policing began with slave patrols, continued through the enforcement of segregation and only slowly offered equal protection. The same critique applies in Canada to the experience of Indigenous peoples, for whom police were long the most visible arm of policies of control and assimilation. Professor Desjardins tells the class that a police officer does not have to carry personal guilt for history, but does have to understand why some people meet a uniform with suspicion, because that suspicion is the starting point of many encounters.

Research and the community era

From the 1970s, research began to test assumptions that police had taken for granted. The Kansas City Preventive Patrol Experiment of 1972 and 1973 varied the amount of random car patrol in different beats and found no meaningful difference in crime, fear of crime or citizen satisfaction. Studies of rapid response found that most crimes are reported too late for speed to matter. Studies of detectives found that most cases are solved because victims and witnesses identify suspects, not through brilliant detective work. These findings did not mean police were useless; they meant that police needed better strategies. Herman Goldstein's problem-oriented policing, proposed in 1979, urged police to analyze recurring problems and tailor responses. James Q. Wilson and George Kelling's broken windows article of 1982 argued that visible disorder signals that no one cares, inviting more serious crime. Community policing, which spread widely in both countries in the 1990s, emphasized partnerships, foot and bicycle patrol and shared responsibility for safety.

The 1990s and 2000s also brought a series of inquiries that reshaped Canadian policing. The Royal Commission on the Donald Marshall Jr. Prosecution in Nova Scotia (1989) found that racism had contributed to the wrongful conviction of a Mi'kmaw man. Ontario created the Special Investigations Unit in 1990 after several police shootings of Black men in the Toronto area. The Ipperwash Inquiry (2007) examined the OPP's role in the death of Dudley George, an Indigenous protester, in 1995. In Toronto, the shooting of Sammy Yatim on a streetcar in 2013 led to former Supreme Court Justice Frank Iacobucci's 2014 report on police encounters with people in crisis. In 2018 the Office of the Independent Police Review Director's report Broken Trust found systemic racism in Thunder Bay police investigations of Indigenous deaths. The National Inquiry into Missing and Murdered Indigenous Women and Girls reported in 2019, and the Mass Casualty Commission into the 2020 killings in Nova Scotia reported in 2023 with recommendations on RCMP communication and governance. Ontario's Community Safety and Policing Act, which came into force in 2024, was partly a response to these reports.

Why history matters on patrol

History can seem far from the work of a patrol officer answering a noise complaint. Professor Desjardins argues the opposite. When he started in Port Ardent, he says, he treated every encounter as a fresh start. He learned that the people he met carried memories of earlier encounters, their own and their families', and that those memories shaped whether they called police, whether they answered questions and how they reacted to an order. Officers who understand history are better at explaining themselves, better at listening and less likely to take hostility personally. Jesse adds that his community remembers individual officers who treated people well for decades, so history is not only a burden; every officer is adding to it.

Marco asks whether the principles still apply when officers face armed suspects and violent crime that London's bobbies never imagined. Professor Desjardins answers that the minimum force principle has never meant no force; it means force that is necessary and proportionate, after persuasion and warning have failed or when there is no time for them. Modern de-escalation training is a direct descendant of that idea. Amara points out that the test of efficiency principle sits uneasily with services that report arrest counts and ticket numbers as achievements. That tension, Professor Desjardins says, is exactly what lesson 11 on reform is about.

Worked problem

Applying the principles to a modern decision

A business association in Port Ardent asks the police to clear people who are sleeping in a downtown park. A sergeant must decide how to respond. How do the principles of policing by consent help frame the decision?

Show solution
  1. Prevention: the goal is to reduce the underlying problem, such as lack of shelter space and addiction, not just to move people to another block.
  2. Public approval: both the business owners and the people in the park are members of the public; a response that serves one group by humiliating the other will cost trust.
  3. Minimum force: persuasion, outreach workers and offers of shelter should come first; enforcement, where lawful, should be a last resort.
  4. Test of efficiency: success is measured by whether the park becomes safe and usable and whether people are connected to help, not by how many tickets are written.

Answer: The sergeant arranges joint visits with outreach workers and the city, enforces only where there is a clear offence or safety risk, and reports results in terms of people housed and complaints reduced. The principles do not give an automatic answer, but they rule out a purely enforcement-based response.

Common mistakes

  • MistakePeel wrote nine principles of policing.

    InsteadThe list was compiled by later writers from instructions given to the first officers; it is an ideal, not a document Peel wrote.

  • MistakeEarly police were welcomed by everyone.

    InsteadMany people feared a professional police as a tool of state control, and some communities experienced police as enforcers of unjust laws.

  • MistakeThe RCMP was always a national police service like the FBI.

    InsteadIt began as the North-West Mounted Police, a frontier force, and took on contract policing of most provinces between 1928 and 1950.

  • MistakeResearch shows that patrol does nothing.

    InsteadRandom patrol showed little effect, but focused strategies such as hot spots and problem-oriented policing have shown benefits.

Summary and key terms

  • Before 1829, order relied on unpaid constables, watchmen and private thief-takers, and many people feared a professional police.
  • The Metropolitan Police of 1829 aimed to prevent crime through visible, unarmed, civilian patrol based on public consent.
  • The Peelian principles, compiled later, stress prevention, public approval, minimum force and measuring success by the absence of crime.
  • Canadian policing combines the London model in cities with the NWMP and RCMP tradition, which included enforcing policies of control over Indigenous peoples.
  • Kelling and Moore's three eras (political, reform, community problem-solving) are a useful framework, but minority views stress that Black and Indigenous communities experienced each era differently.
  • Research from the 1970s led to problem-oriented and community policing, and inquiries and scandals have repeatedly driven reform.
Policing by consent
The idea that police power depends on public approval and cooperation rather than force.
Peelian principles
A list of principles of policing by consent associated with the 1829 Metropolitan Police.
Professional era
The period of policing that stressed efficiency, central control, technology and crime fighting.
Community policing
A philosophy of policing based on partnerships with the community and shared responsibility for safety.
Problem-oriented policing
An approach in which police analyze recurring problems and design tailored responses.
Broken windows
The theory that visible disorder, left unattended, invites more serious crime.

Practice problems

Work each problem on paper first, then reveal the answer to check.

  1. Why did many English people oppose the creation of a professional police in the early 1800s?

    Show answer

    They feared a force like the French police, used by the state for surveillance and suppression of dissent.

  2. What did the Kansas City Preventive Patrol Experiment find?

    Show answer

    Varying levels of random car patrol made no meaningful difference to crime, fear of crime or citizen satisfaction.

  3. Explain the minority view of the three eras of policing.

    Show answer

    Black and Indigenous communities experienced policing as control and enforcement of unjust laws in eras usually described as progress.

  4. Which principle is in tension with reporting arrest and ticket counts as achievements?

    Show answer

    The test of efficiency is the absence of crime and disorder, not visible police action.

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