I want to add something here though. I've poured countless hours of effort over many years into telling people that they can't post that way about China—I even made a partial list at one point: https://news.ycombinator.com/chinamod. So you could not have picked a worse example. I routinely get accused of being a secret communist agent or (as if it were a bad thing) Chinese myself, just for trying to apply HN's rules evenhandedly. (Everyone accuses the mods of being secretly on their enemies' side. You're doing the same thing here.)
Not that China is a special case; we're against all xenophobia and nationalistic flamewar, including the flavors you yourself have posted. Same goes for religious flamewar, which you've also posted a lot of. The idea that HN moderation favors Christian fundamentalism is just silly—it's an inversion of your own feelings*. The only thing we favor about religion is avoiding tedious internet mudslinging about it. That applies equally to any religion (or irreligion).
Plenty of bad posts do escape moderation, but that's because we only see a small portion of what gets posted. There's far too much for us to read it all, and we rely heavily on users to tell us about the worst bits so we can moderate them.
* People routinely imagine that the moderators are secretly in favor of whatever they themselves dislike. This is a cognitive bias, and there are always enough data points floating around to "prove" it.
p.s. as for "opinions that are inconvenient to companies"... that's pretty much what HN threads consist of.