Just in terms of Australia's multicultural mix, for anyone who is visiting:
Australia does have a really different racial mix to America and the UK, and I think that's something to consider when talking about racism. I think some races in Australia are far more likely to experience racism than others.
- In America the second highest racial demographic is Latinos and the third Highest is African Americans. The second highest language spoken is Spanish. In the UK the biggest non-British demographics are Indians, Pakistanis, Eastern Europeans and people from Africa and the Caribbean. So obviously those demographics are a major focus of political and social discussions - and those countries have become really good at identifying racism directed towards those communities.
In Australia we get people from just about everywhere, especially in Sydney and Melbourne, but by far the biggest non-white migration is from East Asia and South Asia. If you come to Sydney you won't see many African-American or Latino faces, but you will see a huge number of people from China, Vietnam, India, South Korea, Japan, Thailand etc. If you go to Melbourne there is a huge Indian community there too.
The most highly spoken languages in Australia (other than English) are in order -
1. Mandarin, 2. Arabic, 3. Cantonese, 4. Vietnamese 5. Italian 6. Greek, 7. Tagalog, 8. Hindi, 9. Spanish, 10. Punjabi
So in general, I think in the big cities, people from Asia generally are better treated simply because there has been more exposure to that culture (although that said, our media is generally a garbage fire and Coronvirus has certainly been exposing pockets of prejudice lately). Amongst the middle classes there is a lot of mixing of friendship groups and a lot of inter-racial marriages and friendships - my partner was born here but speaks Cantonese.
However if you've come from somewhere else, like the Middle east or Africa, and you go outside Sydney or Melbourne, I think there's much more likely to be prejudice or insensitive casual racism.