You're referring to the peaceful protests that deteriorated into days of violence which killed 197+ people and injured thousands. https://en.wikipedia.org/wiki/July_2009_%C3%9Cr%C3%BCmqi_rio...

For what it’s worth, following the thread in the Wikipedia article it looks like the major facts trace back to Chinese state media.

I think OP was not contesting those acts on China were riots, but rather ironically implying that the acts by BLM/Antifa are riots - despite certain media mostly referring to them as 'peaceful protests'.

well, it didn't look very peaceful. https://commons.wikimedia.org/w/index.php?title=File%3A%C3%9...