W211 Crew is a white supremacist prison gang, active both in and out of prison, that was formed in 1995 at Colorado's Denver County Jail. It was linked to several high-profile murders and criminal investigations. Those included the assassination of Colorado Department of Corrections head Tom Clements. Due to a threatening letter sent by a Texas Aryan Brotherhood member, it was suspected to be linked to similar assassinations of Texas district attorney Mike McLelland, and his assistant prosecutor Mark Hasse, but a former Justice of the Peace was eventually indicted for those murders.
WThe Aryan Brotherhood, also known as the Brand or the AB, is a neo-Nazi prison gang and an organized crime syndicate which is based in the United States and it has an estimated 15,000–20,000 members both inside and outside prisons. The Anti-Defamation League calls it the "oldest and most notorious racist prison gang in the United States". According to the Federal Bureau of Investigation (FBI), the Aryan Brotherhood makes up an extremely low percentage of the entire US prison population but it is responsible for a disproportionately large number of prison murders.
WThe Aryan Brotherhood of Texas (ABT) is an American white supremacist and Neo-Nazi prison and street gang. According to the Anti-Defamation League and the Southern Poverty Law Center, the Aryan Brotherhood of Texas is one of the largest and most violent neo-Nazi white supremacist prison gangs and organized criminal enterprises in the United States, responsible for numerous murders and other violent crimes.
WThe Aryan Circle is a white supremacist, Neo-Nazi prison gang spread throughout many U.S. correctional facilities.
WThe Black Guerilla Family is an African-American black power prison and street gang founded in 1966 by George Jackson, George “Big Jake” Lewis, and W. L. Nolen while they were incarcerated at San Quentin State Prison in Marin County, California.
WDead Man Inc. or DMI is a predominantly white organized crime enterprise. It was founded in prison and has members in many correctional facilities and streets throughout Maryland, as well as other states in the U.S.
WThe European Kindred (EK) is a prison and street gang that began in the Oregon prison system.
WHermanos de Pistoleros Latinos (HPL) is a Mexican American prison gang founded by Chino Avitia in Texas during the early 1980s. The English translation of the gang's name is "Brotherhood of Latin Gunmen". It operates in all Texas prisons and on the streets in many communities in Texas, particularly in Laredo. HPL is active throughout Mexico with its largest contingent in Nuevo Laredo. The gang is structured and is estimated to have 1,000 members. Members maintain close ties to several Mexican drug trafficking organizations and are involved in the trafficking of large quantities of cocaine and marijuana from Mexico into the United States for distribution.
WThe Mexican Mafia, also known as La eMe, is a highly organized Mexican American criminal organization in the United States. Despite its name, the Mexican Mafia did not originate in Mexico, and is entirely a U.S. criminal prison organization. Law enforcement officials report that the Mexican Mafia is the deadliest and most powerful gang within the California prison system. Government officials state that there are currently 400–500 official members of the Mexican Mafia with around 1,000 associates who also carry out its illegal activities in the hopes of becoming full members.
WThe Nazi Lowriders are a Neo-Nazi, White supremacist organized crime syndicate, and prison and street gang based primarily in metro Los Angeles and several areas around Texas. They also are believed to have spread to other states, having small rural and suburban factions. They are allies of the larger and more notorious gangs, the Aryan Brotherhood and the Mexican Mafia and fellow peckerwood gang Public Enemy No. 1. Their main rivals are the Bloods, the Crips, the Black Guerrilla Family, MS-13, Norteños, and Nuestra Familia. The Nazi Low Riders operate in and outside of prison. Methamphetamine abuse is common among members of the group. NLR violence has struck the general public, including police officers.
WNuestra Familia is a criminal organization of Mexican American (Chicano) prison gangs with origins in Northern California. While members of the Norteños gang are considered to be affiliated with Nuestra Familia, being a member of Nuestra Familia itself does not signify association as a Norteño. Some law enforcement agents speculate that the Nuestra Familia gang, which operates in and out of prisons, influences much of the criminal activity of thousands of Norteño gang members in California. The gang's main sources of income are distributing cocaine, heroin, marijuana, and methamphetamine within prison systems as well as in the community and extorting drug distributors on the streets.
WThe Soldiers of Aryan Culture (SAC), sometimes referred to as Soldiers of the Aryan Culture and Soldiers of an Aryan Culture, is a large American white supremacist prison gang.