Sometimes in conversation I hear people talk about how we have to save the world, interfere with other countries, etc. I think this should never be done unilaterally. If something really bad and evil is going on in the world then many countries should agree and cooperate to try to fix things.
The trouble with unilateral intervention is that it can so easily devolve into just serving the needs of special interests.
I think of the current regime in China as more an authoritarian single party regime. We have tolerated or been allied with authoritarian single party regimes in earlier decades such as Taiwan under the KMT, Japan under the early LDP, and South Korea under Rhee.
China places a higher priority on enforcing social harmony than the US, but China has a history where there have been multiple periods of severe social disturbance causing 10s of millions of deaths, such as the Taiping Rebellion. In actual practice most people have quite a lot of freedom on most subjects most of the time since, "Heaven is high, and the Emperor is far away."
Strong privacy is the "security by obscurity" solution to being free.