In ordinary language, a crime is an unlawful act punishable by a state or other authority. The term crime does not, in modern criminal law, have any simple and universally accepted definition, though statutory definitions have been provided for certain purposes. The most popular view is that crime is a category created by law; in other words, something is a crime if declared as such by the relevant and applicable law. One proposed definition is that a crime or offence is an act harmful not only to some individual but also to a community, society, or the state. Such acts are forbidden and punishable by law.
Murder is the unlawful killing of another human without justification or valid excuse committed with the necessary intention as defined by the law in a specific jurisdiction. This state of mind may, depending upon the jurisdiction, distinguish murder from other forms of unlawful homicide, such as manslaughter. Manslaughter is killing committed in the absence of malice, such as in the case of voluntary manslaughter brought about by reasonable provocation, or diminished capacity. Involuntary manslaughter, where it is recognized, is a killing that lacks all but the most attenuated guilty intent, recklessness.
Crime statistics refer to systematic, quantitative results about crime, as opposed to crime news or anecdotes. Notably, crime statistics can be the result of two rather different processes:
A violent crime, violent felony, crime of violence or crime of a violent nature is a crime in which an offender or perpetrator uses or threatens to use harmful force upon a victim. This entails both crimes in which the violent act is the objective, such as murder, assault, rape and assassination, as well as crimes in which violence is used as a method of coercion or show of force, such as robbery, extortion and terrorism. Violent crimes may, or may not, be committed with weapons. Depending on the jurisdiction, violent crimes may be regarded with varying severities from homicide to harassment.
Crime in Canada is generally considered low overall. Under the Canadian constitution, the power to establish criminal law & rules of investigation is vested in the federal Parliament. The provinces share responsibility for law enforcement, and while the power to prosecute criminal offences is assigned to the federal government, responsibility for prosecutions is delegated to the provinces for most types of criminal offences. Laws and sentencing guidelines are uniform throughout the country, but provinces vary in their level of enforcement.
Articles related to criminology and law enforcement.
In the United States, the relationship between race and crime has been a topic of public controversy and scholarly debate for more than a century. Crime rates vary significantly between racial groups; however, academic research indicates that the over-representation of some racial minorities in the criminal justice system can in part be explained by socioeconomic factors, such as poverty, exposure to poor neighborhoods, poor access to public and early education, and exposure to harmful chemicals and pollution. Racial housing segregation has also been linked to racial disparities in crime rates, as black Americans have historically and to the present been prevented from moving into prosperous low-crime areas through actions of the government and private actors. Various explanations within criminology have been proposed for racial disparities in crime rates, including conflict theory, strain theory, general strain theory, social disorganization theory, macrostructural opportunity theory, social control theory, and subcultural theory.
Sex differences in crime are differences between men and women as the perpetrators or victims of crime. Such studies may belong to fields such as criminology, sociobiology, or feminist studies. Despite the difficulty of interpreting them, crime statistics may provide a way to investigate such a relationship from a gender differences perspective. An observable difference in crime rates between men and women might be due to social and cultural factors, crimes going unreported, or to biological factors. The nature or motive of the crime itself may also require consideration as a factor. Gendered profiling might affect the reported crime rates.
Crime in Australia is managed by various law enforcement bodies, the federal and state-based criminal justice systems and state-based correctional services.
Crime has been recorded in the United States since its founding and has fluctuated significantly over time. Most available data underestimate crime before the 1930s, giving the false impression that crime was low in the early 1900s and had a sharp rise after. Instead, violent crime during the colonial period was likely three times higher than the highest modern rates in the data we have, and crime had been on the decline since colonial times. Within the better data for crime reporting and recording available starting in the 1930s, crime reached its broad, bulging modern peak between the 1970s and early 1990s. After 1992, crime rates have generally trended downwards each year, with the exceptions of a slight increase in property crimes in 2001 and increases in violent crimes in 2005–2006, 2014–2016 and 2020–2021. As of July 1, 2024 violent crime was down and homicides were on pace to drop to 2015 levels by the end of the year.
Pre-crime is the idea that the occurrence of a crime can be anticipated before it happens. The term was coined by science fiction author Philip K. Dick, and is increasingly used in academic literature to describe and criticise the tendency in criminal justice systems to focus on crimes not yet committed. Precrime intervenes to punish, disrupt, incapacitate or restrict those deemed to embody future crime threats. The term precrime embodies a temporal paradox, suggesting both that a crime has not yet occurred and that it is a foregone conclusion.
Crime in Italy, though low compared to other developed countries, is present in various forms throughout the nation. Italy is notorious for its organized crime groups, which are present worldwide and collectively referred to as the Mafia. Resultantly, financial crimes like corruption, extortion, and theft are the most common type of illicit activity in the country. Violent crimes are exceedingly rare in Italy evidenced by its homicide rate of 0.51 per 100,000 inhabitants in 2021, the lowest in Europe aside from Luxembourg and Slovenia, and one of the lowest in the world.
Lawrence W. Sherman is an experimental criminologist and police educator who defined evidence-based policing. Since October 2024 he has served as Chief Executive Officer of Benchmark Cambridge, a global police reform organisation. From 2022-24 he was Chief Scientific Officer of the Metropolitan Police at Scotland Yard, and since 2017 he has served as the Wolfson Professor of Criminology Emeritus at the University of Cambridge Institute of Criminology.
Crime in Oakland, California began to rise during the late 1960s after the King assassination riots, and by the end of the 1970s Oakland's per capita murder rate had risen to twice that of San Francisco or New York City. In 1983, the National Journal referred to Oakland as the "1983 crime capital" of the San Francisco Bay Area. Crime continued to escalate during the 1980s and 1990s, and during the first decade of the 21st century Oakland has consistently been listed as one of the most dangerous large cities in the United States.
Criminology is the interdisciplinary study of crime and deviant behaviour. Criminology is a multidisciplinary field in both the behavioural and social sciences, which draws primarily upon the research of sociologists, political scientists, economists, legal sociologists, psychologists, philosophers, psychiatrists, social workers, biologists, social anthropologists, scholars of law and jurisprudence, as well as the processes that define administration of justice and the criminal justice system.
The Ferguson effect is an increase in violent crime rates in a community caused by reduced proactive policing due to the community's distrust and hostility towards police. The Ferguson effect was first proposed after police saw an increase in violence following the 2014 shooting of Michael Brown in Ferguson, Missouri. The term was coined by Doyle Sam Dotson III, the chief of the St. Louis police, to account for an increased murder rate in some U.S. cities following the Ferguson unrest. Whether the Ferguson effect really exists is subject of discussions with many published studies reporting contradicting findings concerning whether there is a change in crime rates, number of 911 calls, homicides, and proactive policing. Furthermore, the effect and influence of the portrayal of police brutality in the media is also contested.
Charles Franklin Wellford is an American criminologist, emeritus professor in the Department of Criminology and Criminal Justice at the University of Maryland–College Park. He previously served as the department's chair. In 1996, the Department of Criminology and Criminal Justice established the Charles Wellford Fellowship in his honor. He was chair of the University of Maryland's Athletic Council from 1995 to 2008. He was the president of the American Society of Criminology (ASC) during 1995–96. In addition he was the research director for the National Issues Center at Westinghouse Corporation, director of the Federal Justice Research Program, Director of the Maryland Justice Analysis Center, Director of the Center for Applied Studies, Director of the Office of Academic Computing, Dean of Graduate Studies and Research and Dean of Continuing and Extended Education. He twice served as the President of the Atlantic Coast Conference and served on the Championship Cabinet and Management Council of the NCAA.
The crime drop or crime decline is a pattern observed in many countries whereby rates of many types of crime declined by 50% or more beginning in the mid to late 1980s and early 1990s.
Murder Accountability Project (MAP) is a nonprofit organization which disseminates information about homicides, especially unsolved killings and serial murders committed in the United States. MAP was established in 2015 by a group of retired detectives, investigative journalists, homicide scholars, and a forensic psychiatrist.
Slovenia is a Central European country with a history of relatively low crime. Slovenia has an assortment of police forces, with the Slovenian National Police Force the primary law enforcement agency.
