The Mara Salvatrucha gang originated in Los Angeles, set up in the 1980s by Salvadoran immigrants in the city's Pico-Union neighborhood who immigrated to the United States after the Central American civil wars of the 1980s.
Definition. The Sierra Club is the oldest grassroots environmental organization in the United States. The organization was founded in 1872 by a San Francisco group of professors, businessmen, and other professionals led by John Muir (Cohen 1985, 10).
SL - a terrorist group formed in Peru in the late 1960s as a splinter group from the communist party of Peru; is among the most ruthless guerilla organizations in the world; seeks to destroy Peruvian institutions and replace them with a Maoist peasant regime; is involved in the cocaine trade; Shining Path has been responsible for 30,000 deaths.