Here is a video and a presentation about the Dirty war in Argentina.
The Dirty War, from 1976-1983, was a seven-year campaign by the Argentine government against suspected dissidents and subversives. Many people, both opponents of the government as well as innocent people, were «disappeared» in the middle of the night. They were taken to secret government detention centers where they were tortured and eventually killed. These people are known as «los desaparecidos» or «the disappeared.»