Hong Kong protests: Police use tear gas on demonstrators

Violence has broken out in Hong Kong after tens of thousands of people defied a police ban to march through the city centre. The protesters are demanding more government concessions and political reforms. Al Jazeera's Jamela Alindogan reports from Hong Kong. Subscribe to our channel: http://aje.io/AJSubscribe Follow us on Twitter:   / ajenglish   Find us on Facebook:   / aljazeera   Check our website: https://www.aljazeera.com/ #AlJazeeraEnglish #HongKong #Protests