But once they(protesters) have been done， they need to be completely peaceful and dignified. And once the point is made， they need to be stopped. The most dangerous thing you can have is a gradual descent into increasingly violent protests， which is the danger Hong Kong faces. The danger that these people are running is losing control of their own protests. It could lead to widespread violence that in turn will lead to a economic flight of capital from Hong Kong.
It will cause massive unemployment in Hong Kong and that will be a huge economic danger and damage to Hong Kong.