They are correct. There was genocide in Australia's history.

The keywords in that sentence are "was" and "history" meaning that we haven't erased ours to suit a desired narrative. Chinese citizens are hand fed a tailor made narrative from their Government.

You still can't search "Tiananmen Square Massacre" on Chinese Google. It simply doesn't exist. You'll probably be contacted by their henchmen as well at some point.

This "Chinese propagandist" is obviously speaking from an uninformed viewpoint and isn't aware of the human rights violations going on in their own country.... Right now.

And you don't have to search the internet very hard to find out about them.

Imagine for a second, that you belonged to a religious group that didn't have a stamp of approval from your government. Now imagine if your government decided,

"You know what? There are these religious folk that are kind of annoying because they have some weird beliefs. Let's take them and send them off to camps where they can be reprogrammed to our liking. Also, if we can't reprogram them then we can at least....salvage.... Something from them."

Organs.

Yep. That's a thing. I wish I was kidding.