![Protesters gather during a rally against the police's use of tear gas in Hong Kong, December 6, 2019.](/sites/default/files/multimedia_images_2019/201912china_hongkong_protest_teargas.jpg)
Protesters gather during a rally against the police's use of tear gas in Hong Kong, December 6, 2019.
© 2019 AP Photo/Vincent Thian
Protesters gather during a rally against the police's use of tear gas in Hong Kong, December 6, 2019.