Valid points but a lot of frustrations and injustices you hear about in the USA are told by our own press because freedom of press. We are a very transparent people. This is not the case for other places.

My brother lived and worked in China for many years as a professional photographer and basically made the same points as you when we would ask him about what life is like over there. That was until he fell under suspicion at some point because he was in the wrong place at the wrong time taking pictures. He was under house arrest for over a year. They confiscated his passport but eventually let him leave because of Covid. He had zero due process. It was decided by the local police that he should be under house arrest. My family hired a lawyer but he had to present the lawyer to the police as a "concerned family friend who lives in China".

That anecdote is relatively tame compared to what some people go through in authoritarian countries. If the government targets you in one of those countries, your life is over with near zero chance of getting out of trouble.