Uighur right activist holds a placard during the protest.

LONDON, UNITED KINGDOM - 2020/01/19: Uighur right activist holds a placard during the protest. Activists rally in solidarity with the pro-democracy movement in Hong Kong and in protest at China's treatment of its Tibetan and Uighur peoples at a demonstration for all three causes outside the Chinese Embassy in London. In its newly-released 'World Report 2020', New York-based research and advocacy NGO Human Rights Watch last week singled-out 'deepening repression' by Chinese authorities during 2019, including of religious freedoms in Tibet and in the Uighur homeland of Xinjiang, as the defining feature of what was the 70th anniversary year of the Chinese Communist Party. (Photo by David Cliff/SOPA Images/LightRocket via Getty Images)