US is often portrayed as the boogyman
Imperalism is the occupation of tibet, Xinjiang is not just the modern uyghur history, but centuries of conflict. There is also the occupation of mongolian regions, korean so forth.
Edit: to clarify, it's saying often that any revolution is a "colour revolution" i.e. a cia plot and therefore dismissing any real reason it happens is one of the many ways the US is the reason, while dismissing any real concerns. I'm not saying china worse, I'm just saying that it doesn't matter which one is worse ☺️