HK police arrest nearly 200 in first protest under new security law

Hong Kong police fired water cannon and tear gas and arrested nearly 200 people on Wednesday as protesters took to the streets in defiance of sweeping security legislation introduced by China that critics say is aimed at snuffing out dissent.

Beijing unveiled the details of the much-anticipated law late on Tuesday after weeks of uncertainty, pushing China's freest city and one of the world's most glittering financial hubs onto a more authoritarian path.