A video shown by television station TVB allegedly catches a 4-minute act of brutal beating by Hong Kong police of a protester last night.

https://www.youtube.com/watch?v=P2aITGfN0qk

Foreigners working and living in Hong Kong are advised by foreign consulates to stay away from protest sites as the Chinese government and the Hong Kong government appear to be dealing with the once-peaceful protest by more violent means.