Plaintiffs are the wrongful death beneficiaries of three union leaders…who were executed by members of the Gabriel Reveis Pizarro 18th Mobile Brigade…of the Colombian national army…Defendant Occidental Petroleum is liable for the descendants’ murders...Plaintiffs, in their capacities as decedents’ wrongful death beneficiaries, bring claims for war crimes, extrajudicial killings, and crimes against humanity under the Alien Tort Statute.