Shazza is the nickname for Sharon and Bazza is Barry. A reasonably good summary of Australian nicknames is
here.
Many Australian Aboriginals view Australia Day as Invasion Day, and who could blame them. I suppose, however, if it had not been us it would have been the Dutch. One way or the other that was the way things went at that time.
I wonder what Europe will be like in 200 years time. Nothing like it is today that is for sure.