The Bushmen are several self -sufficient, hunter-gatherer, populations of the Kalahari desert. (If you have some sort of sense of humor you might remember their language and ways of life from "the gods must be crazy" movie).
They have been displaced from their land several times (1997 and 2002) by the government of Botswana and live now in camps where their way of life has been altered in such a way, that they have to struggle constantly with starvation, alcoholism and HIV/AIDS.
(Survival International)
Please check these websites out:
http://www.iwant2gohome.org/ (the Kgeikani Kweni, original people from the Kalahari page)
More on http://www.survival-international.org/news.php?id=1872 (ONG that speaks out for indigenous rights to land)

Since this is my first post, I have to say that I´m pretty happy to be part of the TIG community!!