[ardy42]

> Maybe because there might exist propaganda against the Chinese government? If Twitter has evidence for Chinese propaganda on a US-based site that's inaccessible to the Chinese population, wouldn't it be reasonable to suspect that US propaganda that targets the Chinese government exists too?

This is making the false assumption that "propaganda" is symmetrical and equivalent. From the CCP perspective, "propaganda against the Chinese government" would be to dispute its false and self-serving account of history or to suggest the Chinese people should enjoy Western-style human rights -- basically anything that questions the ultimate authority and dominance of the party.

See: https://www.nytimes.com/2013/08/20/world/asia/chinas-new-lea... and https://www.chinafile.com/document-9-chinafile-translation.