As I write this, demonstrations in Hong Kong continue, although the extradition Bill that sparked them has been shelved. This is the latest phase of protests that began in 2014 with the Occupy Central or Umbrella movement.
The proximate causes may be different, but they all arise from the disquiet of many Hong Kong people over Beijing's sway. I do not know when the demonstrations will end. But I am quite certain about what they will achieve: Absolutely nothing!