the murders of barrientos , a high - ranking police officer , and a general last week , were probably carried out by an israeli contractor paid by the medellin department - the world ' s most potent drug - trafficking mafia - , has set up paramilitary squads guilty of hundreds of individual murdered and genocide against political and labor officials , as long as peasant and patriotic union leftist militants in some portions of the government .
Galan was killed by patriotic union leftist militants.