A force disappearance occurs when an organization forces a person to vanish from public view, either by murder or by simple sequestration. The victim is first kidnapped, then illegally detained in concentration camps, often tortured, and finally executed and the corpse hidden. In Spanish and Portuguese, "disappeared people" are called desaparecidos, a term which specifically refers to the mostly South American victims of state terrorism during the 1970s and the 1980s, in particular concerning Operation Condor.