A prison gang is an inmate organization that operates within a prison system. It has a corporate entity and exists into perpetuity. Its membership is restrictive, mutually exclusive, and often requires a lifetime commitment. Prison officials and others in law enforcement use the euphemism "security threat group" (or "STG"). The purpose of this name is to remove any recognition or publicity that the term "gang" would connote when referring to people who have an interest in undermining the system.

Origins

Convict code and informal governance of prisons Before the rise of large, formal prison gangs, political scientists and researchers found that inmates had already organized around an understood "code" or set of norms. For example, political scientist Gresham Sykes in The Society of Captives, a study based on the New Jersey State Prison, claims that "conformity to, or deviation from, the inmate code is the major basis for classifying and describing the social relations of prisoners".Gresham M. Sykes, The Society of Captives: A Study of a Maximum Security Prison (Princeton: Princeton University Press, 1958), 79. Prisoners achieved a social equilibrium around unwritten rules. The code may include an understanding of prison slang, or prison yard and dining hall territory based on gang membership, rank, race, ethnicity, religion, or crimes committed, or it could simply be loyalty between inmates and against guards. Sykes writes that an inmate may "bind himself to his fellow captives with ties of mutual aid, loyalty, affection, and respect, firmly standing in opposition to the officials." Hostility between wardens and prisoners, restrained freedom, and, some argue, the lack of access to heterosexual relationships shaped prison culture's social, environmental and political dynamics.

Rising prison populations and the emergence of formal gangs

When researchers or political scientists actively discuss "classic prison gangs", they are referring to prison gangs in the United States of America; such gangs began to form in the mid 1960s. Around this time, across the United States prison system, the prison population increased markedly.Compare:

As prison populations grew, the informal convict code no longer sufficed to coordinate and protect inmates. The constant surge of prisoners coming into the system with no understanding of the status quo had disrupted the established equilibrium cohesion. And as demographics inside prisons changed drastically, small groups centered on ethnicity, race, and pre-prison alliances were disrupted. John Irwin states in his book, Prisons in Turmoil, that by 1970 "there [was] no longer a single, overarching convict culture".Irwin, John. 1980. Prisons in Turmoil. Boston: Little, Brown

Furthermore, as the prison population grew so did the consumer base for contraband items, not only drugs and weapons but also items that are legal outside of prison but are illegal to trade within prisons, such as money, alcohol, tattoos, etc. Several challenges arose that destabilized the socio-political system of self-enforced cooperation that had existed under the convict code. These new conditions posed complications to consumer-supplier relationships in the already distrustful environment of an underground economy. It became more and more difficult for independent individual suppliers to accommodate this increased demand. Under tight prison security and with limited means, these individual suppliers could only provide a limited amount of product. Their consumer base was too small for them to establish a "brand" or credibility themselves. New consumers would have to buy products of unknown quality and bear the risk of the supplier being an undercover informant and even the possibility that he would not deliver at all.

The ever-fluctuating inmate population also provided a dangerous market in which to operate. Individual suppliers had to protect themselves from possible murder and assault by consumers and other suppliers, as well as to ensure that their products would not be confiscated or stolen. They were vulnerable to those who delivered and carried the contraband into the prison, and they bore the risk of consumers not paying for the product, or (if operating on credit) not paying the loan. The consumers could also be informants.

In legal markets, governments mitigate such risks by means of contract enforcement and the upholding of property rights. Gangs may step into this role and fill the power vacuum.Compare: Skaperdas, Stergios. "The Political Economy of Organized Crime: Providing Protection When the State Does Not." Conflict and Governance (2003): 163-92. "Mafias and gangs are hierarchically organized and can be thought of as providing primitive state functions, with economic costs that are typically much higher than those associated with modern governance." They vet and manage tax-paying supplier gangs within prisons, regulate transactions, and control violence in the marketplace and on the streets.

Prison gangs are effective in governing markets. They provide protection to their member suppliers more effectively than individual suppliers could do for themselves. They carry the credible threat of exercising violence - and even murder in case of theft or snitching - to ensure timely payments. They protect their members against competing suppliers. The size of prison gangs and their scale of product supply also means that they have a broad scope of knowledge about their client base. They share information on informants or inmates who default on payments. This scope of supply also gains a reputation with consumers, who can then feel safe in being able to gauge the quality of product and credibility of suppliers.

A crucial difference between individual suppliers who operate under the convict code and prison gangs involves the time-frame in which they operate. Unlike individual suppliers who cycle in and out, prison gangs form long-term institutions, regardless of how often individual members enter or leave the system. There are always plenty of members to maintain the gang's functions – behind bars and on the streets. This means they have a solid incentive to provide a quality product to uphold a good reputation in the long run.

Prison gangs have evolved into complex organizations with hierarchies and vote-based ranks and intricate coalitions with exclusive and often permanent memberships.

Alternative factors and explanations

Another approach to understanding prison gang development is based on observations of inmates in the Texas prison system. It provides a five-stage progression from an inmate's entrance to the prison to the formation of a prison gang.Buentello, Salvador, Robert S. Fong, and Ronald E. Vogel. 1991. "Prison Gang Development: A Theoretical Model." The Prison Journal 71(2): 3–14. First an inmate enters the prison, alone and thus fearful until he finds a sense of belonging in a "clique of inmates." They band together without formal rules, leaders, or membership requirements. It then evolves into a "predatory group," creating exclusive requirements for membership and positioning itself against wardens, even assaulting them. Then, by engaging in illegal activities, they choose leaders to manage them. In its final stage, the group emerges as a prison gang.

A gendered approach to prison gangs offers two arguments focusing on the idea of male domination and the inmate's adherence to a hyper-masculine ideal.

One argument claims that prison order is shaped by the inmates' desire or need for male domination, and the gang reconstructs this sense of power in prison.Dolovich, Sharon. 2011. "Strategic Segregation in the Modern Prison" American Criminal Law Review 48(1): 1–110. As inmates can no longer "subjugate women," they find other forms of domination, resorting to force and violence to control each other.

Another approach, discussed by Erving Goffman, maps out four steps of inmate adaptation. In the first step, the inmate undergoes a "situational withdrawal" or mental withdrawal from the institution. "The inmate withdraws apparent attention from everything except events immediately around his body." The second step is called "colonization" when the inmate tries to rationalize the institution as preferable to life on the outside. The third step, "conversion," is when "the inmate takes over the staff's view of himself and tries to act out the role of the perfect inmate." The fourth step, which prison gang members fit into, is called "the intransigent line," when the inmate refuses the authority of the institution and acts against it.Goffman, Erving, Asylums: Essays on the Social Situation of Mental Patients and Other Inmates (London: Penguin, 1973) (first published in 1961).

There are also two prominent sociological theories surrounding prison gangs and the order within prisons: deprivation theory and importation theory.

Deprivation theory argues that social order within prisons arises due to the pain of imprisonment; studies focusing on this theory examine the experiences of prisoners and the nature of their confinement.

Importation theory focuses instead on experiences prisoners had prior to incarceration. It explores the ways in which class, race, and drug culture outside the prison have shaped dynamics inside the prison.

Another approach to understanding prison gang development is offered in sociologist Brittany Friedman's Carceral Apartheid, which argues that what the state terms prison gangs originally emerged as prisoner organizations that were in fact social movements that consolidated cliques to protest state violence targeting certain racial groups, particularly during the height of the Civil Rights Movement; Friedman's work emphasizes how state agencies engage in criminalization, torture, and extralegal violence using white supremacists to create a governance regime of carceral apartheid that mirrors the outside world as a crucial environmental factor shaping the development of prisoner collective action.

Operations and activities

The system of governance in prison gangs highlights the unusual mechanisms by which people (or groups of people) with no access to government institutions manage to facilitate exchange and establish property rights within their scope of influence. The emergence of informal governance systems within prison gangs runs parallel to successful systems of trade and control beyond bars. Skarbek (2011)Skarbek, David. 2011. "Governance and prison gangs." American Political Science Review 105(4): 702-716. uses the example of the illegal narcotics trade in Los Angeles to explain how an alternative system of governance behind bars can lead to successful socioeconomic organization. Focusing on the Mexican Mafia prison gang, Skarbek argues that the mafia holds substantial control within local jail systems which allows it to yield power over drug dealers on the streets. Drug dealers outside the prison walls anticipate future incarceration and thus future interaction with the mafia. Faced with the threat of these future run-ins with the Mafia, drug dealers on the street comply with the current demands of prison gangs in order to secure their own future.

Since prison gangs gain a long-term profit if transactions in the illicit market run smoothly, they have the incentive to ensure that there is order and cohesion between suppliers and consumers.