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darkly shaded painting of two winged angels chasing a man who runs away from a fallen, naked man attacked and subdued for his clothing
Justice and Divine Vengeance in pursuit of Crime– 1808 oil-on-canvas by Pierre-Paul Prud'heon

A crime (or misdemeanor or felony) is an act done by a person which is against the laws of a country or region. A person who does this is called a criminal.

The basic idea of what things are called "crimes" is that they are thought to be things that might cause a problem for another person. Things like killing another person, injuring another person, or stealing from another person are crimes in most countries. Also, it can be a crime to have or sell contraband such as guns or illegal drugs.

When some criminals make money from crime, they try to stop the police finding out where the money came from by money laundering. Men and boys commit many more crimes than women and girls.[1]

Levels of crime

There are various levels of crimes. In some jurisdictions they are:

  • misdemeanor - a minor crime, typically punished by a fee or less than 1 year in jail.
  • felony (or high crime) - a major crime, typically punished by 1 year or longer in prison.

Different countries have different ideas of what things are crimes, and which ones are the worst. Some things that are crimes in one country are not crimes in other countries. Many countries get their ideas of what things are crimes from religions or controversial events which cause a law to be quickly created. For example, a religious Taboo might say eating a particular food is a crime. When automobiles became numerous, they killed or hurt many people in road accidents, so new laws were made for them.

In many countries, if people say they made or wrote a book, movie, song, or Web page that they did not really make or write, it is a crime against copyright laws. In many countries, helping to grow, make, move, or sell illegal drugs is a crime.

In most countries, police try to stop crimes and to find criminals. When the police find someone who they think might be a criminal, they usually hold the person in a jail. Then, usually, a court or a judge decides if the person really did a crime. If the court or judge decides that the person really did it, then he or she might have to pay a fine or go to prison. Sometimes the judge might decide that the criminal should be executed (killed). This is called Capital punishment (or the Death Penalty). There are countries in the world that execute criminals, and others that do not.

In many countries, two conditions must exist for an act to be thought of as a crime:

  • Actus rea - the criminal did something against the law
  • Mens rea - the criminal knew what they were doing was against the law and did it anyways, or they knew they were doing something that could accidentally end up being against the law and didn't care

Both must be present for the act to be thought of as a crime.


  1. Messerschmidt, James W. "Masculinities, crime, and prison." Prison masculinities (2001): 67-72.