who said anything about large scale? There's no need, as the majority are sheep and follows obediently (as their lives are comfortable enough to not want it endangered "fighting the good fight").
The few that would lead are pruned early. Even very rich individuals, who, if they were in the west, would wield high amount of power and influence, are easily disappeared - ala, jack ma.
Jack Ma disappeared from public media. It's same here, if you make non political correct comments in public, you will be shuned like plague. One such example is Mr. Trump.
Don't paint a picture that China is unique worse than another country. It's all the essence in different disguise.
And stop associating certain behavior and incident with China as a whole.
Don't China this China that. Don't say China backed this and that, there are organization behind those. Find them, understand them, and see their motivation firstly from a personal perspective and then from the national ones.
Associating an entire nation to each and every bad things is unfair, irlogical, and dangerous.