His "Rules for Rulers" video is an excellent summary of The Dictator's Handbook , itself a summary of well-regarded selectorate theory . I have yet to watch a CPG Grey video which does not honestly separate fact from opinion, and ensure the former is well sourced.
His delivery is excellent. But that, alone, is not substitute for well-written and -researched material.
 The Dictator's Handbook: Why Bad Behavior is Almost Always Good Politics
 The Dictator's Handbook: A Practical Manual for the Aspiring Tyrant
Fascinatingly relevant right now.
To add to this, administrators know if they don't hire extensively they are likely to be replaced by someone who will. There is no control mechanism. Giving students a small periodic vote in respect of their top administration would go a long way towards ameliorating such corruption.
The "Dictator's Handbook" covers such topics https://www.amazon.com/Dictators-Handbook-Behavior-Almost-Po...
Right now, Hong Kong is way too valuable as an economic engine, but the political dangers are more pressing to the CCCP. So the government will clamp down on freedoms as best they can until the citizens can't take it anymore, then keep beating the horse until it's dead.
You should read the book The Dictator's Handbook if you want to understand it better.
Provides compelling case that all politicians tend toward dictatorship with the difference in how fully these tendencies are realized just being in the size of the coalition they have to appease, reward, or bully. With stereotypical absolute dictators this easy to see. On the other end of the spectrum, it is more shrouded. American democracy is theoretically based on a maximum sized coalition equaling roughly the entire population. In practice, the leaders are beholden to and have to influence a much smaller coalition to wield power. Something like the current Sanders/Clinton popular vote vs inner circle super delegate issue demonstrates this pretty well. Fascinating read.