Also, the more accurate adjective is "indigenous" or "aboriginal", not "native".
This is working on the same principle as the euphemism ratchet or Negro->Black->African-American. It has no information content.
Except that the term native is overloaded; it can refer to an individual (as in "native speaker") as well as to a population, with different implications. I'm a native of my country, i.e., not an immigrant, but I'm not a member of the continent's native population.
The difference is typically clear from context, but not always.
Also, the more accurate adjective is "indigenous" or "aboriginal", not "native". This is working on the same principle as the euphemism ratchet or Negro->Black->African-American. It has no information content.