inputs: hypothesis: Galan was killed by patriotic union leftist militants. premise: The murders of Galan, a high-ranking police officer, and a judge last week, were probably carried out by an Israeli mercenary paid by the Medellin cartel - the world's most powerful drug-trafficking mafia - which has set up paramilitary squads accused of hundreds of individual murders and massacres against political and labor leaders, as well as peasants and patriotic union leftist militants in different parts of the country.