Not to justify those problems, but there are direct comparisons of those problems in the US. More recently with the human rights issues with ICE, though this is certainly not a new issue it has been ramped up over the years, but territorial ambitions, though less direct, have been US policy for over 60 years. Recently you have Iran and Palestine of course, but the US has been overthrowing democratically elected leaders in particularly South American countries for a while now. As I say, less direct than sending troops in and taking over literally, but installing a puppet leader in these countries is certainly grounds for "territorial ambition".
As I say, I don't want to dismiss what China is doing as "well the US are doing it too", it's just worth pointing out if that's a red line for a global power
Parent's comment was "Let's hope China are benevolent world superpower" - I provided grounds why they (China) are not, you've provided grounds for why the US is not. The two are mutually exclusive insofar as the US' state of benevolence has no bearing on China's.
Deliberately or not, your comment is an example of whataboutism [0]
[0] https://en.wikipedia.org/wiki/Whataboutism