The mass detention and “re-education” of Uyghurs and other Muslim minorities in China’s Xinjiang region began in early 2017.

Right, and there was plenty of misinformation about that the media pushed as fact.

The yellow umbrella movement protests and crackdowns reached their peaks roughly in 2019/2020.

The umbrella movement was 79 days in 2014 according to Wikipedia. There was no noticable shift in American opinion of China in response to that.