But a Chinese diplomat, State Councilor Yang Jiechi, accused the U.S. and other Western governments of “constantly fanning the flames of the situation in Hong Kong.”

Meanwhile, Hong Kong Chief Executive Carrie Lam and other Chinese officials have similarly claimed, without providing evidence, that “Western forces” are behind the protests. Last week, the head of the police union in China called for an investigation into the alleged U.S. role in the demonstrations and Chinese Foreign Ministry spokeswoman Hua Chunying pointed to “irresponsible statements” by U.S. politicians, suggesting they are looking to incite disorder and unrest in China.

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On Tuesday, demonstrators shut down operations at Hong Kong’s airport for the second day in a row, flooding the main terminal. The airport, which is one of China’s largest economic hubs, was filled with approximately 10,000 protesters, drawing Hong Kong riot police to the scene armed with pepper spray and batons. The police clashed with demonstrators in violent scenes, eventually re-opening the airports.

Protesters are demanding that Lam step down and pull legislation that would allow the government to extradite criminal suspects to mainland China, where they would likely face torture or unfair politically charged trials. Recent demonstrations have called for an independent inquiry into the city’s police and its alleged abuse of power.

Lam said Tuesday that dialogue would begin only when the violence stopped. She reiterated her support for the police and said they have had to make on-the-spot decisions under difficult circumstances, using “the lowest level of force.”

Fox News’ Benjamin Hall, Rich Edson, Mark Meredith, Alex Pappas, and the Associated Press contributed to this report.