Tongs and outlaw motorcycle gangs, as well as terrorist, militant, and paramilitary groups, are mentioned if they are involved in criminal activity for funding.
In several drug-producing or transit countries, drug traffickers have taken advantage of local corruption and lack of law enforcement to establish cartels turning in millions if not billions of dollars each year.
Juárez Cartel[3][5][10][13] Italian immigrants to the United States in the early 19th century brought with them the underground government many Americans refer to as "Cosa Nostra" (Our Thing) along with its traditions and formal induction rituals along with the concepts and precepts of Omerta, which espouses honorable and manly behavior at all times and under all conditions, taking care of your own problems and assisting your community, as well as non-cooperation with corrupt law enforcement and government officials.
Although government crackdowns and a less-tightly knit Italian-American community have largely reduced its power, the American Mafia remains an active force in the underworld Organized crime in Italy, especially the south, has existed for hundreds of years and has given rise to a number of notorious organizations with their own traditions and subculture which have managed to infiltrate almost every part of Italian society.
Balkan organized crime gained prominence in the chaos following the communist era, notably the transition to capitalism and the wars in former Yugoslavia.
Youth gangs have often served as a recruiting ground for more organized crime syndicates, where juvenile delinquents grow up to be full-fledged mobsters, as well as providing muscle and other low-key work.