The pattern I see, so often that it's predictable and a source of frustration: 1. It's easy to stay beneath the moderators' radar by sounding 'reasonable' (in fact, on other topics, that's an explicitly taught strategy to white supremacists [0], it's a well-established technique of propaganda going back decades if not centuries, and I expect that professional astroturfers in any domain have the same skills); 2. the astroturfers almost always appear; I expected to see many pro-China comments appear here, including from purported Kenyans / East Africans (I certainly wouldn't say all are propaganda, but the pattern over many discussions seems clear enough that it's predictable); 3. on issues about which few HN users have knowledge or expertise, such as this one, there aren't even many people who can rebut the astroturfers; it's one-sided.
EDIT: Major revisions; apologies to anyone who read an earlier draft.
[0] ... he presented himself as polite, articulate and interested in cultural politics, and though his views are abhorrent, he stated them all so laconically you might forget that he actually believes in the concept of a white ethnostate. And that’s the point: The genius of the new far right, if we could call it “genius,” has been their steadfast determination to blend into the larger fabric of society to such an extent that perhaps the only way you might see them as a problem is if you actually want to see them at all.
https://www.nytimes.com/2018/11/03/magazine/FBI-charlottesvi...