Chinese President Xi Jinping has sworn in Hong Kong's new leader Carrie Lam. The ceremony comes at the end of Xi's three day visit marking the 20th anniversary of the territory's return to China. But as Britt Clennet reports, official events were marred by protests.Subscribe: http://trt.world/subscribe Livestream: http://trt.world/ytlive Facebook: http://trt.world/facebook Twitter: http://trt.world/twitter Instagram: http://trt.world/instagram Visit our website: http://trt.world