While I'm not particularly surprised that "lost and completely uncontacted" tribe that made the rounds a few months ago, well, wasn't, I am annoyed at the completely uncommented paternalism which triggered the whole episode:

Indigenous tribes expert, José Carlos Meirelles, said the tribe had been known of since 1910, and had been photographed to prove that they still existed in an area endangered by logging, The Guardian reported.
...
"When we think we might have found an isolated tribe, a sertanista (tribe expert) like me walks in the forest for two or three years to gather evidence and we mark it in our (global positioning system)," he told Al Jazaera in his first interview since the images were released.

"We then map the territory the Indians occupy and we draw that protected territory without making contact with them. And finally we set up a small outpost where we can monitor their protection."

These are not rare jaguars or gazelles, they're people, just like you and me. They are people, moreover, who I would imagine would appreciate knowledge that would help more of their children survive their first year, if nothing else. They don't need protection, they need opportunities.

Meh. I'll bet you dollars to donuts they've been so isolated for so long not because of any government or NGO "protection", but because the place in which they live is so miserable and hard to reach nobody wants to contact them. Some Amazon tribes also have an extremely well-deserved reputation for being such miserable examples of the human race nobody else wants to contact them either, at least not for very long.

Ah well. It's not my tax dollars being spent to "protect" people who're just as smart and clever as I am. "I say, let 'em crash."