By referencing two sources, provide a definition for the concept gang

Source 1: "Gangs are groups of individuals who share a common identity, engage in criminal activities, and exhibit a distinct structure and hierarchy." ("Understanding Gangs: Definitions, Identification, and Response," National Gang Center)

Source 2: "A gang is a group or association of three or more persons who may have a common identifying sign, symbol, or name and who individually or collectively engage in criminal activity." (FBI, "National Gang Report 2015")

Combined definition: A gang can be defined as a collective of three or more individuals who share a common identity, often represented by a sign, symbol, or name, and engage in criminal activities. Gangs typically exhibit organizational structure and hierarchy within their ranks, and their criminal involvement may vary but often includes activities such as drug trafficking, violence, and organized crime.

Source 1: The Oxford English Dictionary

According to the Oxford English Dictionary, a gang is defined as "a group of people, especially young people, who regularly associate together for social reasons, often involving criminal or antisocial behavior."

Source 2: National Institute of Justice

The National Institute of Justice, which is the research arm of the U.S. Department of Justice, defines a gang as "a group of three or more individuals who engage in criminal activity and identify themselves with a common name or sign."

Combining the definitions from these two sources, we can define a gang as a group of individuals, often young, who regularly associate together for social reasons. This association frequently involves engaging in criminal or antisocial behavior, and members often identify themselves with a common name or sign.

To provide a definition for the concept of a gang, let's refer to two sources:

Source 1: Merriam-Webster Dictionary
According to Merriam-Webster Dictionary, a gang is "a group of persons working to unlawful or antisocial ends, especially: a band of antisocial adolescents." This definition highlights the unlawful nature of gangs and their tendency to engage in antisocial behavior.

Source 2: United Nations Office on Drugs and Crime (UNODC)
The UNODC defines a gang as "a relatively durable, predominantly street-based group of young people who see themselves (and are seen by others) as a discernible group, engaging in a range of criminal behaviors and who may identify or lay claim to territory or control over specific areas, often with the use or threat of violence."

By combining these two definitions, we can define a gang as a group of individuals, often young people, who engage in unlawful or antisocial activities and may identify themselves as a distinct group. Gangs may involve criminal behaviors, claim territory, and exhibit violent behavior or the threat thereof.

To find these definitions, you can refer to reputable sources such as dictionaries, academic literature, or official organizations like the United Nations Office on Drugs and Crime.