Pro-democracy activist Lester Shum is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu TPX IMAGES OF THE DAY

Pro-democracy activist Lester Shum is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

Pro-democracy activist Lester Shum is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

Pro-democracy activist Lester Shum is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

Journalists document through a car window as pro-democracy activist Benny Tai (2nd R) is taken to a police station in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Police stand guard outside pro-democracy activist Lester Shum's office as they searching for evidence after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

A supporter of pro-democracy activist Lester Shum waves to Shum as he is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

Police stand guard outside pro-democracy activist Lester Shum’s office after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

Pro-democracy activist Lester Shum is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

Pro-democracy activist Lester Shum is taken away by police officers after over 50 Hong Kong activists arrested under security law as crackdown intensifies, in Hong Kong, China January 6, 2021. REUTERS/Tyrone Siu

American lawyer John Clancey walks out of a building as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

American lawyer John Clancey sits inside a police van as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

American lawyer John Clancey walks out of a building as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

American lawyer John Clancey walks out of a building as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Raphael Wong, chairman of the League of Social Democrats, attends a news conference after over 50 Hong Kong activists were arrested under the national security law, in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Party members of the pro-democracy camp attend a news conference after over 50 Hong Kong activists were arrested under the national security law in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Party members of the pro-democracy camp attend a news conference after over 50 Hong Kong activists were arrested under the national security law in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Alan Leong, chairman of the Civic Party, attends a news conference after over 50 Hong Kong activists were arrested under the national security law, in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Li Kwai-wah, a senior superintendent at the national security department of the police force, attends a media briefing after over 50 Hong Kong activists were arrested under the national security law, in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Li Kwai-wah, a senior superintendent at the national security department of the police force, attends a media briefing after over 50 Hong Kong activists were arrested under the national security law, in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Li Kwai-wah, a senior superintendent at the national security department of the police force, leaves at the end of a media briefing after over 50 Hong Kong activists were arrested under the national security law, in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

Li Kwai-wah, a senior superintendent at the national security department of the police force, attends a media briefing after over 50 Hong Kong activists were arrested under the national security law, in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

American lawyer John Clancey walks out of a building as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

American lawyer John Clancey walks out of a building as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik

American lawyer John Clancey walks out of a building as he is taken away by police officers in Hong Kong, China January 6, 2021. REUTERS/Lam Yik