I mentioned in an earlier post, I had seven years there in the 80s and my experiences were similar. Undisguised racism against the indigenous population was rife. I heard plenty. Unsurprisingly the very worst was during time spent in the NT but no shortage elsewhere either.
Agree what you say...
The result speaks volumes of a great many Australian attitudes towards the indiginous population and non white foreigners. (lived there seven years) The OP appears a living example.