Summary: In Hong Kong, a new set of national security laws imposed by the central government in Beijing has gone into effect. The legislation restricts many freedoms enjoyed in the semi-autonomous territory, ushering in a new and ominous era for the previously freewheeling hub of international business. On the 23rd anniversary of the city's handover from the United Kingdom to China, Nick Schifrin reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
