Yes they should be deported out of Australia back to where their ancestors came from for stupidity, Aborigines have been in Aussie for 4000 years or so, England or back in Europe somewhere, would be a good place to send the deportees to.
It's not the least charm of a theory that it is refutable. The hundred-times-refuted theory of "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it - Friedrich Nietzsche