This is probably best taken to a political forum but...
Wow there are some sweeping generalizations there. As with generalizations, if those are all you look at you miss half of the picture.
'Cause i like a good stir, here is a quandry for you.
In one part of Australia (the central desert from memory, but it's nearly 20 years since i studied it), there are two distinct rock art traditions. One the local people know and understand, as it is their heritage and thier stories going back 10 or 15 000 years. If you ask them about the other style of art they say, "that was here when we got here" or "that was from the people before us" doesn't that make them "guests" too?