So as long as you're not doing political activism, it's fine. I know people who've had private messages apparently censored when they contained anti-government ideas. They don't get arrested. It's not something to fear. The tech companies just monitor and delete politically risky content. If you are a real dissident, then you know you're breaking the law, however vaguely it's worded, and you know you're in danger.

You tell me how Nazi could possibly raise to the very top without the help of that very beneficial revolution? maybe time to read more history books and come back with better trolling skills?

I do agree that it is always good for some political speculators.

What about the Cultural Revolution which put the ruling party itself in power? It's a bit hypocritical for the government to categorically condemn revolution when they wouldn't even exist without it.

And yeah, while the French Revolution was probably a good thing in the long run, it was pretty terrible in the short run: https://en.wikipedia.org/wiki/Reign_of_Terror

First of all, the Cultural Revolution didn't put the ruling party in power, and second of all the CCP (and China) of today is very different from the CCP (and China) at the time of the Cultural Revolution.