Hong Kong police fired water cannon and tear gas on Wednesday to break up the first protest since China introduced sweeping security legislation and they made their first arrests under it, warning of punishment for calling for secession or subversion.
Hong Kong police have arrested more than 300 protesters on the first day of life under the controversial national security laws..
Protesters have held up blank pieces of white paper to avoid using slogans banned under a new national security law in Hong Kong on..
