We have a little harbour-village just outside Cape Town called Hout Bay and they have some crazy signs up even saying "Welcome to the Republic of Hout Bay" and you can even get a "passport" from the local Tourist Info centre - all tongue in cheek - in fact more non-HoutBayers own the passports - its a little money-spinner - I am sure the Oz folk are not this conceited and I also posit that the sign was put up by locals - its not an official govt sign. Chill out guys !
In fact if you care to google Orania - this is a little town in South Africa that is still in the Apartheid dark ages - everyone in the town is ..................................Caucasian - and you feel the white supremacy ideology very strongly. They still fly the old Aparheid flag in the town.