[dang]

The issue in this case is that you created an account specifically to get involved in flamewars about China. That's an abuse of HN regardless of which side you're on.

I don't think most of the comments you listed were egregious. The last three, sure - but at least one of those accounts is already banned, and in any case, if posts are flagged/dead then they're already marked as unacceptable to this community, meaning the immune system is functioning. I'm not sure what more you can ask than that, and it certainly doesn't justify making things worse.