A protester shouts slogans near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Policemen stand guard as protesters gather outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters march to the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

A protester waves a British flag as police stand guard outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Plice stand guard outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

A protester waves a British flag near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

Protesters gather near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Vivek PRAKASH / AFP)

A protester places a sticky-note on a board near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

A protester holds a placards as police stand guard outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters shout slogans outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Police stand guard behind a closed fence near the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters shout slogans outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Police stand guard outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Protesters shout slogans as police stand guard outside the West Kowloon railway station during a demonstration against a proposed extradition bill in Hong Kong on July 7, 2019. - Thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by Hector RETAMAL / AFP)

Pro-democracy activist Joshua Wong is hold by a policeman as he confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

Pro-democracy activist Joshua Wong confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

Pro-democracy activist Joshua Wong confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

Pro-democracy activist Joshua Wong confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

Pro-democracy activist Joshua Wong confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

Pro-democracy activist Joshua Wong looks on as he confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

Protesters gather around as pro-democracy activist Joshua Wong confronts police after taking part in a march to the West Kowloon rail terminus against the proposed extradition bill in Hong Kong on July 7, 2019. - Tens of thousands of anti-government protesters rallied outside a controversial train station linking the territory to the Chinese mainland on July 7, the latest mass show of anger as activists try to keep pressure on the city's pro-Beijing leaders. (Photo by VIVEK PRAKASH / AFP)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)

HONG KONG, HONG KONG - JULY 7: Protesters gather to take part in the demonstration against anti-extradition bill on June 7, 2019 in Hong Kong, China. Pro-democracy demonstrations have continued on the streets of Hong Kong for the past month, calling for the complete withdrawal of a controversial extradition bill. Hong Kong's Chief Executive Carrie Lam has suspended the bill indefinitely, however protests have continued with demonstrators now calling for her resignation. (Photo by Richard Atrero de Guzman/ ALFO)