Research the following Security Threat Groups/Gangs: The Aryan Brotherhood, Black Guerilla Family, The Folk Nation, The Mexican Mafia, and MS 13. Provide an overview of each gang, focusing on the specific impact of these groups on the correctional system. Be sure to explain the following for each gang:

• Where the gang originated and who its founder was.
• What its basic beliefs and mission are.
• The prisons where it is the strongest and weakest (geographically).
• Whether it is growing or in decline.
• The criminal activities that the gang is involved in within the prison system.
• At least one example to illustrate how dangerous it is in the prison system.