Understanding and protecting someone by studying whatever they leave behind on their wanderings, including bows, arrows, artifacts, and traces of food and makeshift camps-such is the routine of experts who dedicate their lives to the defense of native groups in voluntary isolation. One such champion was Bruno Pereira, former head of the General Coordination of Uncontacted and Recently Contacted Indigenous People of Brazil's indigenous agency FUNAI. He was killed in an ambush back in June 2022-an incident that also cost the life of The Guardian correspondent Dom Phillips. The two paid the price for denouncing social and environmental crimes in the Amazon Forest. Noticias relacionadas: Isolated indigenous people to be vaccinated againstCOVID-19. One year after the killings, important questions regarding the communities Pereira and Phillips sought to protect remain unanswered. Uncontacted groups are more numerous in Brazil's Vale do Javari indigenous territory than anywhere else i