Operation Auca: Five U.S. missionaries are killed by the Waorani of Ecuador shortly after making first contact.

Operation Auca was an attempt by five Evangelical Christian missionaries from the United States to bring Christianity to the Waorani or Huaorani people of the Amazon rainforest of Ecuador. The Waorani, also known pejoratively as Aucas, were an isolated tribe known for their violence, against both…