Take a look at these popular representations of minority cultures:

Macqueen, Angus. 2016. “Why Are the Lost Tribes Now Emerging from the Amazon?” The Guardian, February 21, sec. World news. https://www.theguardian.com/world/2016/feb/21/amazon-lost-tribes-emerge-rainforest-brazil-peru.

Muzenda, Mako. 2016. “Will These African Languages Be Lost Forever?” UN Dispatch. August 30. http://www.undispatch.com/will-african-click-languages-lost-forever/.

And also this comment popular ideas about “uncontacted” peoples:
Nuwer, Rachel. 2016. “Anthropology: The Sad Truth about Uncontacted Tribes.” BBC News. Accessed September 12. http://www.bbc.com/future/story/20140804-sad-truth-of-uncontacted-tribes.