I think that is actually the primary reason, in my view. As Professor Cohen talked about, Xi Jinping is a one-person management. It is very difficult to hold together that kind of total control, and for years Hong Kong has been a place where they could not completely control and silence, and all of it is spilling over.
I think I will even add that it is unusual and different because unlike Xinjiang and other regions within China or within the mainland, Hong Kong has experienced freedom of speech, freedom of the press, all the assemblies and protests already, and they're trying to put it back into the box, which is a much more difficult task than what they've done.