There's some horrible stuff back then, and even today.
There's still Australian Aborginals . There might be no pureblood Tasmainan Aborginals, but there are at least half bloods, and there are quite a few from the mainland. On a similar note, there's still quite a few North American Indians, amongst other native groups.
If there were any genocidal campains aimed at these groups, they didn't finish it, and it's pretty damn likely they could have. Only other colonists could have stopped them, if they had that kind of numbers and power.
Here in South Africa, there are now many times more black people than there were back in 1910 - their numbers doubled again and again over the 20th century. But this doesn't stop the anti-white Left from calling the Afrikaner nationalist government's racial segregation polices a "genocide".
Now that I'm thinking about such statements, I know of people, right now, who will openly say "Kill all white people!" and get cheers. Very few are seriously trying it. (Although, there's some terrible things happening.....)
There you have it. They accuse others of what they themselves with to do to them. And gradually we are seeing the mask dropping - they are ceasing to even pretend to be pretending to believe in civilized values.