The Aboriginals came from Australia, and they haven't really left. Unlike the British and Spanish, who expanded all over the world, they are still quite local to where they were living thousands of years ago. So, here is my question to you, Shouls the Americans, British, French, Spanish etc. all go back to where they came from? You're saying that they have a piece of land that is theirs and that they should stay in it, which, while I don't know what nationality you are, I am going to assume you are European from your perspective. Therefore, if your family lives abroad to your home country, you are being a hypocrite.