Overview: Unreported World investigates how Colombia's indigenous people have been targeted in a string of massacres perpetrated by guerrillas, paramilitary groups and the security forces. Colombia's government claims success in its war against left-wing FARC guerrillas and in restoring law and order. But the country is still beset with a conflict that is killing thousands. And as Reporter Aidan Hartley and director Katherine Churcher discover at a jungle massacre site where the pools of blood are still drying, behind the continuing violence there is a state of complete impunity. Nobody can explain why the massacre happened. Soldiers claim civilian attackers with pistols have murdered eight people. But local witnesses say they heard sustained bursts of automatic gunfire, hinting at the involvement of security forces.