Muerte a Secuestradores or MAS, was a Colombian paramilitary group and a private army supported by drug cartels, U.S. corporations, Colombian politicians, and wealthy landowners during the 1980s to protect their economic interests and fight... Wikipedia
Active: 1981–1990s
Notable commanders: Pablo Escobar; Jorge Luis Ochoa Vásquez; José Gonzalo Rodríguez Gacha