A crime is an act or omission that constitutes an offense that may be prosecuted by the state and is punishable by law. Crimes are generally considered to be offenses against the state or the community, rather than just the individual victim. The specific nature and definitions of crimes can vary by jurisdiction but typically include such conduct as theft, assault, robbery, and trafficking in controlled substances. The legal system is designed to regulate social conduct, deter and mitigate crime, and sanction those who violate laws with criminal penalties and rehabilitation efforts.