In the aftermath of the incident, Hong Kong internet users launched an eye for eye action, calling for the public to cripple Hong Kong International Airport, the news outlet reported. Some passengers and departing protesters opted to walk.
Protesters demonstrate at the airport in Hong Kong.
Ai, who has lived in Berlin since 2015, told the AP on Monday that Trump's comments at a campaign rally earlier this month that China will "have to deal with that themselves, they don't need advice" was a "very bad signal". The Stoxx Europe 600 Index came off its session high and contracts for all three main US equity indexes erased earlier gains.
Chants of "Liberate Hong Kong" echoed through the working class area of Sham Shui Po when more than a thousand black-shirted protesters marched.
Since Friday, groups of peaceful protesters have occupied the airport's main arrivals terminal, unfurling banners and handing out anti-government leaflets in multiple languages to global visitors. A Chinese state-run company told employees not to fly Cathay Pacific on business or personal trips, according to people familiar with the matter.
Such a designation adds to the regime's descriptions of protesters as clowns, criminals and traitors intent on overthrowing Chinese rule in Hong Kong.
In both videos, security forces in full riot gear and tight formation used tear gas and shields to corral and disperse "protesters" dressed in construction hats and facemasks - reminiscent of demonstrators in Hong Kong.
"The police will "decoy" as any kind of people", Tang said many times.
Footage inside another station showed officers firing what appeared to be non-lethal ammunition at close range and several police officers beating people with batons. He refused to say how many officers were doing undercover work in disguise and when they started to put police among the protesters after the fight against the extradition bill started in June.
One of the world's busiest airports canceled all flights after thousands of Hong Kong pro-democracy protesters crowded into the main terminal Monday afternoon.
"Airport operations at Hong Kong International Airport have been seriously disrupted as a result of the public assembly at the airport today", the statement said. "Additionally, in-town check-in services have been suspended", a statement from Cathay Pacific reads.
It said only those flights that have already completed the check-in process will move ahead.
While China might be exploiting fears of a bloody "Tiananmen" crackdown on Hong Kong's protest movement, analysts say the potentially catastrophic economic and political consequences will deter Beijing from any overt boots-on-the ground intervention.
The protest movement's demands also include the resignation of the Chinese territory's leader and an election for her successor.
The outcry originally targeted a bill that would allow China to extradite Hong Kong citizens to the mainland for trial, but quickly grew into a call for autonomous democracy.
Asked if undercover police pretending to be protesters had been involved in violent acts that police accused the protesters of doing over the past two months - to frame protesters, Tang insisted that police would not do anything illegal or to provoke attacks.
Hong Kong carrier Cathay Pacific warned the disruption could cause delays or cancellations of flights.