Thousands of protesters descend on to Charter Park as demonstrators watch video messages of support from international supporters as well as live speakers at a protest in Hong Kong, China, August 16, 2019.

Pro-democracy protesters attend a rally in Hong Kong on August 16, 2019.

Chinese military personnel maintain trucks and armored personnel vehicles parked outside the Shenzhen Bay stadium on August 16, 2019, in Shenzhen, China.

Chinese servicemen attend a crowd control exercise at the Shenzhen Bay Sports Center in Shenzhen across the bay from Hong Kong, China August 16, 2019.

Protesters continue their sit-in rally at the airport in Hong Kong, Aug. 14, 2019. Flight operations resumed at the airport Wednesday morning after two days of disruptions marked by outbursts of violence highlighting the hardening positions of pro-democracy protesters and the authorities in the Chinese city that's a major international travel hub.

Anti-government demonstrators sit in a designated area of the arrival hall of the airport, after police and protesters clashed the previous night, in Hong Kong, China, Aug. 14, 2019.

A protester shows a placard to stranded travelers during a demonstration at the Airport in Hong Kong, Aug. 13, 2019. Protesters severely crippled operations at Hong Kong's international airport for a second day, forcing authorities to cancel all remaining flights out of the city after demonstrators took over the terminals as part of their push for democratic reforms.

Police fire tear gas to clear pro-Democracy protesters during a demonstration on Hungry Ghost Festival day in the Sham Shui Po district on August 14, 2019, in Hong Kong, China.

A protester attempts to kick a tear gas canister during a demonstration on Hungry Ghost Festival day in Sham Shui Po district on August 14, 2019, in Hong Kong, China.

Anti-extradition bill protesters watch as demonstrators point laser pens at the police station in Sham Shui Po in Hong Kong, China, August 14, 2019.

A Hong Kong policeman falls backwards as they scuffle with pro-democracy protesters during ongoing demonstrations at Hong Kong's International Airport, Aug. 13, 2019. Hundreds of flights were cancelled or suspended at Hong Kong's airport as pro-democracy protesters staged a disruptive sit-in at the sprawling complex, defying warnings from the city's leader who said they were heading down a "path of no return."

Fu Guohao, reporter of Chinese media Global Times website, is tied by protesters during a mass demonstration at the Hong Kong international airport, after he was believed to be an undercover police officer, in Hong Kong, China, Aug. 13, 2019.

Policemen with batons and shields shout at protesters during a demonstration at the Airport in Hong Kong, Aug. 13, 2019.

Police clash with protesters at the airport in Hong Kong, Aug. 13, 2019.

A tourist gives her luggage to security guards as she tries to enter the departures gate during while demonstrations continued at Hong Kong's International Airport, Aug. 13, 2019.

Demonstrators form a barricade as they clash with riot police at Hong Kong International Airport, Aug. 13, 2019.

Protesters occupy the departure hall of the Hong Kong International Airport, Aug. 12, 2019.

A protester is detained by police during a demonstration, Aug. 3, 2019, in Hong Kong, China. Pro-democracy protesters have continued to rally on the streets of Hong Kong against a controversial extradition bill even after Hong Kong's Chief Executive Carrie Lam apologized for introducing the bill and declared it "dead."

A bleeding man is escorted by police after he was attacked by demonstrators in Hong Kong, July 31, 2019. Demonstrators clashed with police in Hong Kong after reports that some of their detained colleagues would be charged with the relatively serious charge of rioting.

Thousands of Hong Kong protesters participate in a march from a public park to call for an independent investigation into police tactics, July 21, 2019.

Pro-Beijing demonstrators gather outside the Legislative Council Complex to show their support for the police, July 20, 2019, in Hong Kong.

Hong Kong Chief Executive Carrie Lam pauses during a press conference, July 9, 2019, where she said the effort to amend an extradition bill was "dead," but did not offer to withdraw the legislation.

Protesters storm into the government headquarters in Hong Kong, July 1, 2019.

A person sprays paint over Hong Kong's coats of arms inside the chamber after protesters broke into the Legislative Council building during the anniversary of Hong Kong's handover to China, July 1, 2019, in Hong Kong.

Ten of thousands of protesters flood the streets during a rally in Hong Kong, July 1, 2019.

Protesters take part in a rally in Hong Kong, June 26, 2019, capping a daylong appeal to world leaders ahead of a G-20 summit.

Protesters fill the streets of Hong Kong to rally against the extradition bill ahead of 2019 G20 Osaka summit, June 26, 2019 in Hong Kong.

A man holds eggs in his hand to throw at the police as thousands of protesters surround the police headquarter in Hong Kong, June 21, 2019.

People listen to speeches during a "mums protest" against alleged police brutality and the proposed extradition treaty, near the Legislative Council building on June 14, 2019, in Hong Kong.

Police man a road as protesters attend a rally against a controversial extradition law proposal outside the government headquarters in Hong Kong, June 12, 2019.

A demonstrator sits down in front of riot police during a demonstration to demand authorities scrap a proposed extradition bill with China, in Hong Kong, June 12, 2019.

Protesters march along a downtown street against the proposed amendments to an extradition law in Hong Kong, June 9, 2019. The amendments have been widely criticized as eroding the semi-autonomous Chinese territory's judicial independence by making it easier to send criminal suspects to mainland China, where they could face vague national security charges and unfair trials.