h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

British Colonist to Australia and the Tasmanian Palawa people:

"When Trugernanner died, the Tasmanian Government declared the island’s aborigines to be extinct. Its intention was to make everyone understand that the native problem was over, but the government was wrong on both counts. Other aboriginal women born from full-blooded tribal parents outlived her. For example, two indigenous women named Betty and Suke died towards the end of the nineteenth century on Kangaroo Island, off the coast of South Australia, where they had lived most of their lives in the forced company of sealers (though, living on Kangaroo Island, they were not "problems" to the Tasmanian authorities). Fanny Cochrane Smith, born on the Flinders Island aboriginal settlement, died in 1905 at Port Cygnet, Tasmania."

"In combination with epidemic impacts of introduced Eurasian infectious diseases, to which the Tasmanian Aborigines had no immunity, the conflict [the Black War] had such impact on the Tasmanian Aboriginal population that they were reported to have been exterminated".
http://en.wikipedia.org/wiki/Black_War

"All of the Indigenous Tasmanian languages have been lost".
http://en.wikipedia.org/wiki/Tasmanian_Aborigines
http://en.wikipedia.org/wiki/Tasmanian_languages

List of massacres of Indigenous Australians by British Colonists:
http://en.wikipedia.org/wiki/List_of_massacres_of_Indigenous_Australians

The story of Trugernanner (circa 1812–8 May 1876) was a woman widely considered to be the last "full blood" Palawa (Tasmanian Aborigine). She wasn't the last but the few remaining "died out" not long afterwards. Her people, her language, her culture, gone.
http://en.wikipedia.org/wiki/Truganini