It’s amazing to see Americans blindly trust their government and media even after several systemic incident
I understand how frustrating it can be when common criticisms feel one-sided and unfair. But this isn't the way to defend against them. It only makes the threads even worse.
HN's audience is mostly Western, so whatever biases Western populations have are going to be reflected here. If you want to respond to these with a contrary, minority view, that's great, but you need to do it thoughtfully and substantively, instead of breaking the site guidelines by lashing out and flaming.
In my experience, to argue contrarian positions well requires accepting in advance that you're not going to be able to change the bulk of opinion; the forces determining it are beyond the power of an internet forum to change. There are still plenty of people who agree with you or are willing to listen, if you post thoughtful, substantive comments as HN users should. When you know something that other users are unwilling to take in, the temptation to lash out at them becomes hard to resist–but if you succumb to it, you only discredit the truth, and that helps neither you nor them. It just makes everyone double down on what they already believe.