@dlowan,
I agree, with the "not coming from recent migrants". There are a lot of hard working "people" that are coming over here, to Australia and show alot of respect for this Country and their own. A new wave perhaps?
I think the agressive australian nationalism, stems from perhaps 30 or more years ago from the "then migrants" that came here...
Bit like kids of today and kids of yesterday and yesteryears.. Now they are spoilt but quite grounded and educated in areas that, well none of us perhaps were so much, as a whole off course.