Occidental Petroleum...gave millions of dollars to the Colombian army unit that carried out the cold-blooded murder of three union activists, while the Colombian government gave "perverse incentives" to its soldiers for killing "guerrillas," which "led to soldiers killing innocent civilians and then falsely reporting them as guerrilla combat deaths to gain rewards," the dead unionists' families say in Federal Court...The Colombian army provided security to an "association" made up of Ecopetrol, Occidental and Spanish oil company Repsol, the plaintiffs say. Occidental's Colombian subsidiary, Oxy Colombia, committed roughly $3 million to the army under the agreement, an amount "so large that Occidental's U.S.-based leadership must have approved the 2004 Security Agreement," the complaint states...Neither Occidental nor the plaintiffs' law firm immediately responded to emailed requests for comment.