There were forcibly taken out of forest by a Christian missionary organization named the New Tribes Mission.
http://www.eco-action.org/mission/ntm.htmlWhen Norman Lewis was researching his book "The Missionaries: God against the Indians" in 1988, he visited one such camp in Paraguay to find "...two old ladies lying on some rags on the ground in the last stages of emaciation and clearly on the verge of death. One was unconscious, the second in what was evidently a state of catalepsy...In the second hut lay another woman, also in a desperate condition and with untreated wounds on her legs. A small, naked, tearful boy, sat at her side... The three women and the boy had been taken in a recent forest roundup, the third woman having being shot in the side while attempting to escape."
In Paraguay, the NTM acted in collusion with the dictator Stroessner, for who the policy of settlement camps and conversion fitted in nicely with his plans for opening up the forest to mining and logging interests. The NTM are also accused of killing many more people, for example the Ayoreo, also of Paraguay, by bringing western diseases into the area. They are also not deterred even by government rulings; in 1998 the Brazilian Association of Anthropology exposed the fact that the NTM were trying to re-establish their reservation for the Zo'E indians, which was closed down by the Brazilian state seven years previously because it emerged that 40 people had died from respiritory diseases, and the NTM's policy of keeping people at the camp by distributing industrialised goods had increased dependancy on these products.
http://www.nytimes.com/1987/04/01/world/asuncion-journal-in-paraguay-s-jungle-no-letup-in-battle-for-souls.htmlOn the other hand, critics of the New Tribes Mission, including lay anthropologists and rival Roman Catholic missionaries, have cited the death of the five Indians as evidence that American evangelists hunt down primitive Indians and destroy their culture in the name of converting them to Christianity.
Nowhere in its statement of core values, or anywhere on its many websites, does the NTM claim any concern for the welfare of the people it is targetting. Even oil companies can usually manage some sort of greenwash bullshit, but the approach of NTM clearly defines indigenous people as 'savages' (it has even used this word in its literature) to be converted.