OK, the USA have a history of growing by slavery and genocides. That can't be changed and the descendants of the winners are better off than the descendants of the losers.
But people living in Europe had their own much longer history of genocides. Example, I'm Italian. If I could look back into my family tree for 2 or 3 millenia I'm sure I'll find all sort of nasty and nice people. Somebody who fought their local wars, somebody invaded by Latins, some Latin invader, somebody who went invading other countries, somebody invading Italy in the last 2k years, somebody that had a part in the few colonial wars fought by Italy in the last centuries, etc. Somebody from a family branch probably went to the USA or any other expanding country and they of their descendants had their share of helping killing off native people.
Replace Italy with another European county. They could have had a less nasty ancient history but they are likely to have a more recent nastier one. And replace with most countries around the world, they still have some huge or small stains in their history.
So this actually applies to nearly all people alive now. This means that we should condone China because they are doing what our ancestors did, maybe on different scale or maybe canceling cultures not by indoctrination but by removing heads from bodies? I don't think so. What's important is what we do, not what ancestors did. But don't forget what they did.