This is a singular anecdotal experience. There are 1.4 billion people in China, most never experiencing anything like that in their lifetime.

People aren't going to KubeCon China because of being harassed by minders. This is not an isolated case. It is pervasive and it is chilling.

It's not pervasive. Incredible claims require evidence, which you have none. If anecdotal evidence is enough, dozens of people I know go to China with zero issues regularly. Many people we know live there with zero issues. There's 1.4 billion people, logistically what got are saying is not feasible for a country that size. It's nonsense.

Western travelers would fit more within the 10% or so of China with total wealth in the $100-$1,000k range.

These are the people with the means to challenge the power structure, and they are watched more closely.

If someone in this wealth range holds up a blank piece of paper, they may end up in jail.

Holding up a blank piece of paper is a completely different scenario and topic! We are talking about normal, everyday travel for business and recreation. If you go there and do something taboo, something that's clearly intended to cause trouble, then what do you expect?

With any foreign country you should understand their cultural norms and laws. Your own ignorance is a valid consideration for travel, not being arrested as a political prisoner. You won't get in any trouble as a tourist or business person 99% of the time.

> You won't get in any trouble as a tourist or business person 99% of the time.

So there is 1% chance; and why would I take even 1% chance of getting into troubled country?

The point is that it is easy to accidentally do something taboo for a random person…