Quelque, your declaration of support for white supremacist views may give you a warm, inner glow but it doesn't give you the right to deprive others of their rights or cast them out of their homeland.
As for going back to whence they came, with an ancestry in Australia dating to the 1840s that pretty much places me here and with that for Aborigines beyond 50,000 years before British invasion, they're not going anywhere either.
Tony Abbott only became an Australian citizen aged 22, some believe so he could apply for that Rhodes Scholarship. Clearly, as a Tony-come-lately his roots are not in Australia and being so emotionally attached to all things UK he should probably return there; especially since he's now at odds with the Pope.
What about you, what's the basis of that white supremacist assertion you made?