I've written about this many times: https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme.... But the special case of people feeling entitled to attack others because of their views on China is important to single out.
HN is a highly international community. It has users all over the world, but also many users who are outside their countries of origin, and users of ancestry from all over the world. It is natural for people here to see these issues very very differently. Our job as a community is to have space for that, not try to exclude violators of our preconceptions.
Since HN's demographic is overwhelmingly Western, there is usually a pro-Western consensus in the comments (though it gets complicated, since many Westerners hold anti-Western views too). I don't see that as a problem, but it becomes a problem when consensus slides into mob behavior, which your comment unfortunately exemplifies.
People have been hounded off this site in ugly ways and attacked for their ethnicity here and I don't want us to have any part of that. Indeed if the question is framed that way, I don't believe you or any other decent HN user would want to have any part of that. The trouble is that we slide into it without intending to.
If you or anyone wants further explanation or examples, plenty are here:
https://news.ycombinator.com/item?id=19404162
https://news.ycombinator.com/item?id=21195898
https://news.ycombinator.com/item?id=21200971
https://news.ycombinator.com/item?id=21195089
https://news.ycombinator.com/item?id=20741930
https://news.ycombinator.com/item?id=20720787