Survival's annual report identifies the most vulnerable tribe in each of three continents; Asia, Africa & South America. In each case, the government involved is breaking international law by not recognising the tribe's right to own their land.
Links
[1] https://www.pambazuka.org/author/contributor
[2] https://www.pambazuka.org/taxonomy/term/3321
[3] https://www.pambazuka.org/article-issue/33
[4] https://www.pambazuka.org/taxonomy/term/3277
[5] http://www.pambazuka.org/en/category.php/racism/2597