Demonstrators hold yellow umbrellas, the symbol of the Occupy Central movement, and placards during a protest to demand authorities scrap a proposed extradition bill with China, in Hong Kong, China June 9, 2019. Several hundred thousand people filled the streets of Hong Kong on Sunday in a last bid to halt a proposed extradition law that would allow suspects to be sent to China to face trial. REUTERS/Tyrone Siu

Demonstrators hold up a signs during a protest to demand authorities scrap a proposed extradition bill with China, outside the Legislative Council in Hong Kong, China June 9, 2019. Hundreds of thousands have taken to Hong Kong's streets to protest against a new law, which would extradite suspects to mainland China, Taiwan, and Macao for trial. REUTERS/Thomas Peter

Demonstrators clash with riot police during a protest to demand authorities scrap a proposed extradition bill with China, outside the Legislative Council in Hong Kong, China June 10, 2019. REUTERS/Thomas Peter

Riot police officers use pepper spray during a protest to demand authorities scrap a proposed extradition bill with China, outside the Legislative Council in Hong Kong, China June 10, 2019. REUTERS/Thomas Peter

A demonstrator picks up railings during a protest to demand authorities scrap a proposed extradition bill with China, in Hong Kong, China June 10, 2019. REUTERS/Tyrone Siu

Demonstrators attend a protest to demand authorities scrap a proposed extradition bill with China, in Hong Kong, China June 9, 2019. REUTERS/Tyrone Siu