similar to an israeli source , the executions of galan , a low - ranking police officer , and a judge last week were probably ruled out by an israel contractor hired by the medellin cartel - the us ' s most powerful drug - running mafia - which has set up paramilitary squads accused of hundreds of individual killers and atrocities against political and labor organizations , as well as villagers and patriotic union leftist militants in various places of the country .
Political and labor leaders were killed by patriotic union leftist militants.