Health advocates do not condemn these gatherings as risky for COVID-19 transmission

[Rev. Rye]

Even going by your restrictive definition of systemic racism, here's a list.

In reality, there is more to systemic racism than genocide.

A shorter answer would be, “the systematic distribution of resources, power and opportunity in our society to the benefit of people who are white and the exclusion of people of color.”

A longer, but more vivid one provided by Stokely Carmichael, who originated the essentially synonymous phrase "institutional racism":

When terrorists bomb a black church and kill five black children, that is an act of individual racism, widely deplored by most segments of the society. But when in that same city – Birmingham, Alabama – five hundred black babies die each year because of the lack of proper food, shelter and medical facilities, and thousands more are destroyed and maimed physically, emotionally and intellectually because of conditions of poverty and discrimination in the black community, that is a function of institutional racism. When a black family moves into a home in a white neighborhood and is stoned, burned or routed out, they are victims of an overt act of individual racism which most people will condemn. But it is institutional racism that keeps black people locked in dilapidated slum tenements, subject to the daily prey of exploitative slumlords, merchants, loan sharks and discriminatory real estate agents. The society either pretends it does not know of this latter situation, or is in fact incapable of doing anything meaningful about it.

I'm not an expert on what the Aborigines had to go through, but I'm sure you can find some examples of these defintions being applied to Aborigines even today. Just start with the Closing the Gap campaign.

And about the A-B-Zero word, while there may be some Aborigines who use it, well, are you familiar with "Tie Me Kangaroo Down, Sport?" And I mean the original version with all the verses? There's a verse that used the word multiple times and it was controversial even at the time. Eventually, it was removed from later versions because it was indeed offensive.

Anyone else remember when that was the worst thing you could say about Rolf Harris? That he used racially insensitive language in a song and removed it when he figured out it was kind of offensive? And not that he was the Australian face of my Jesse Custer mercy killing meme?