Criminal activity carried out by durable groups organised for profit. It differs from individual offending in being structured, continuing beyond its members, and generally depending on the provision of goods and services that are illegal but wanted.
Organised crime is defined by structure and continuity rather than by the seriousness of the offences.
It involves a group with some division of labour and hierarchy, however loose.
It persists over time and survives the removal of individual members, including its leaders.
It is oriented toward profit rather than toward the offence itself.
It uses corruption and intimidation to manage risk, which is what distinguishes it from ordinary commerce operating illegally.
The romantic image of highly formalised organisations with elaborate ritual describes some groups and not most. Much organised crime operates through loose networks assembled for particular ventures, and researchers have generally moved away from the corporate model toward network descriptions.
The central insight is that organised crime supplies markets rather than merely preying on people.
Prohibition creates the opportunity. Where something is wanted and illegal, supplying it is profitable precisely because the risk excludes legitimate competitors. American Prohibition from 1920 to 1933 is the standard illustration, and its repeal removed the market that had funded the organisations it created.
Illegal markets cannot use courts. Contracts are unenforceable, debts cannot be recovered legally, and property cannot be protected by police. Violence substitutes for the legal system, which is why illegal markets are violent even where the product is not.
That substitution explains territoriality. An organisation controlling a territory can enforce agreements within it, and Diego Gambetta's analysis of the Sicilian mafia describes it as an industry supplying private protection where the state does not.
Money laundering is a persistent requirement, since illegal proceeds must be made usable, and much modern enforcement targets this rather than the underlying offences.
Drug trafficking generates the largest revenues globally, and its structure has shifted with enforcement: pressure on one route or organisation reliably produces displacement rather than reduction, a pattern documented repeatedly.
Human trafficking and smuggling, which are distinct: smuggling is a service purchased by the person moved, trafficking involves coercion and exploitation.
Extortion and protection, which is the classic mafia activity and the one most directly tied to territorial control.
Fraud, increasingly online, including large-scale investment and romance fraud operated from centralised locations.
Counterfeiting, of goods, currency and documents.
Environmental crime, including illegal logging, fishing and waste disposal, which is high-value and lightly policed.
Cybercrime, including ransomware, which has developed a service economy with specialised roles and is among the fastest-growing categories.
The Sicilian mafia and its American derivative are the most studied and have declined substantially from their mid twentieth century position under sustained prosecution.
The Japanese yakuza operated semi-openly for decades, with recognised offices and membership, and has contracted sharply under legislation targeting it.
Latin American drug organisations have at times exercised territorial control approaching that of a state in some areas.
Russian and Eastern European groups expanded rapidly after 1991, in conditions where state capacity had collapsed and property was being redistributed.
West African fraud networks, Chinese triads and various regional groups complete a picture that is more varied and less centralised than popular accounts suggest.
Enforcement targeting leadership frequently fragments organisations rather than removing them, and fragmentation is associated with increased violence as successors compete, which has been documented in several settings.
Following the money is generally regarded as more effective than pursuing individuals, since financial infrastructure is harder to replace than personnel.
Legalisation or regulation removes markets entirely, which is the clearest historical case with alcohol, and it is the core of arguments about drug policy, where the evidence from partial liberalisations is contested and jurisdiction-specific.
State capacity is the deeper variable. Organised crime is strongest where the state is weakest or most corrupt, and the causation runs both ways, since criminal revenue funds the corruption that sustains it.
Estimates of the scale of organised crime are highly uncertain, since the activity is concealed by definition, and widely quoted global figures generally rest on extrapolations that their own authors qualify heavily.
Organised crime is the clearest demonstration that prohibiting a market does not remove it, and that the structure of the resulting illegal market is a predictable consequence of prohibition rather than of the product.
Its relationship with the state is also the substantive point. Where contracts cannot be enforced legally, something else enforces them, and organisations that supply that function acquire the characteristics of a rival authority, which is why organised crime is a governance problem rather than only a policing one.
