Well, technically I didn't criticize the cops in the comment you replied to, but rather the Trump supporters. And yes, it is foolish to criticize someone if they have sufficient power over you. It's foolish for a chinese citizen to criticize their one party government on twitter and risk getting visited by said government later that night. Luckily we aren't there yet. However critique itself is a way to wield or acquire power. For example, if the media criticizes you for being a racist, that can end your career or worse. Relevant example: Goerge floyd. They heavily criticized the way this racist cop kneeled on this drug addict, and by doing so drastically changed the power dynamics between blacks and the police. So much so they can arson and loot. Similarly I can ever so slightly shift power dynamics by making the right people see things through the lens of power. As to who is morally right, with sufficient power you can rewrite history. Like china's great firewall preventing citizen from reading about the tianamen square massacre. Turkey not teaching about the armenian genocide. And in the west, we delete youtube channels and use fact checkers. Currently half of america doubts the biden election was fair. Future generations will learn about this in school, and fact checkers promoted by their school. Almost none of them will grow up to doubt it was a fair election. What was the truth? Eventually it doesn't matter, only who's in power. That is a very cynical worldview, but does it not match reality?