In short, China's leadership today has pressure to right historical wrongs. We, as Westerners, should work to understand them so that we can make sense of their behavior as a nation state.
China has two major historical enemies with wrongs that the leadership can stand up to:
(1) The UK for the opium wars (and the 100 year fallout).
(2) Japan for WW2 (and, you know, the whole genocide / killing babies for sport thing).
When the CCP does anything involving these two nations, you can always assume the history and the pressure on the leadership is a factor.
The Hong Kong public disagrees with this, and does not see themselves as 'adversaries'.
My posts do not justify or take a side, they merely aim to provide a more expert understanding of the motives and reality.
They actually do, and consistently so. You are from where I'm sitting consistently arguing China's case without a word of consideration for the people of Hong Kong.
With a country like china which claims thousands of years of history you can always find historical pretext for anything and everything.