In more normal times, several U.S. naval ships visit Hong Kong annually, a rest-and-recreation tradition that dates back to the pre-1997 colonial era which Beijing allowed to continue after the handover from British to Chinese rule.
It comes after President Donald Trump signed the Human Rights and Democracy Act into law. "Although the pan-democrats have gained a landslide victory, it doesn't change the fact that the government is still ignoring us".
Riot police officers block the street as protesters rally outside Prince Edward MTR station in Hong Kong, China, on November 30, 2019.
Tear gas was sacked Sunday as police tried to disperse protests in Hong Kong's Tsim Sha Tsui when a group of radical protesters started hurling bricks at officers during a public protest.
They chanted "five demands, not one less" and "disband the police force" as they marched, in reference to the protest movement's five formal demands of the Government.
Organizations including N.E.D., Human Rights Watch, Freedom House, the National Democratic Institute for International Affairs and International Republican Institute, will be sanctioned for their "odious behavior" in Hong Kong, where they have "strongly instigated extremely violent criminal activities", Hua told reporters in Beijing.
Hong Kong's has experienced almost six months of increasingly violent pro-democracy protests triggered by a now-shelved bill that would have allowed extraditions to China.
Hong Kong's protests have been relatively peaceful during the two weeks around the November 24 elections, but Sunday's disruption indicated there may be more violence if Lam fails to yield to protesters' demands.
Her government has accepted only one demand - withdrawing extradition legislation that would have sent suspects to mainland China for trial. "No matter how many weapons they use and how much force they deploy, officials turn a blind to our demands", said Chan, a clerk in her 40s who declined to give her last name.
Some held banners reading, "Let's make Hong Kong great again" - a riff on Trump's 2016 campaign pledge to "make America great again".
"A lot of parents are anxious that their children are affected, because their children are coughing, breaking out in rashes and so forth", said social worker and march organizer Leo Kong.
China will also suspend rest-and-recuperation visits to Hong Kong by USA military ships and aircraft, Hua said, adding that China could take further retaliatory moves.
"China will take further steps if necessary to uphold Hong Kong's stability and prosperity and China's sovereignty", she said.
She also said that Ms Lam's Government must prioritise "meaningful, inclusive" dialogue to resolve the crisis.
"We urge the United States to correct the mistakes and stop interfering in our internal affairs".
"These young protesters are not the culprits behind the chaos in Hong Kong", said Chan, holding an umbrella and in a black mask - items that have come to characterize the protests.