Have close friends who are married to Australians. It was common knowledge that out in the bush, it was quite frequent to shoot Aboriginals who would wander into your land. Australia had similar gun laws as US and it only changed after the Port Arthur massacre in 1996.

Also Aboriginals do not have the concept of land ownership and hence wouldn't understand the concept of trespassing, especially the kids.

Here is a list of known massacres: https://en.wikipedia.org/wiki/List_of_massacres_of_Indigenou...

I spent some time in Queensland and the lawyers told me point blank that courts would hardly rule in favor of "Non Europeans" even for criminal/personal injury cases and that's why a huge percentage of civil/injury liabilities are settled out of court.