Explain the evolution of street gangs to mega-gangs.

Traditional Eurocentric gangs are being replaced by transnational mega-gangs. Some, such as the Crips, Bloods, and MS-13, have expanded from local street gangs to national mega-gangs with thousands of members. For example, the Surenos is an alliance of hundreds of individual Mexican American street gangs that originated in Southern California. Surenos gang members' main sources of income are the retail-level distribution of cocaine, heroin, marijuana, and methamphetamine within prison systems and in the community as well as extortion of drug distributors on the streets.

Correct!