A spokesman for China's ceremonial legislature has condemned statements from US lawmakers supportive of Hong Kong's pro-democracy movement.
You Wenze called the comments "a gross violation of the spirit of the rule of law, a blatant double standard and a gross interference in China's internal affairs".
He says Hong Kong's 7.5 million people and Chinese population as a whole reject the actions of a "very small group of violent protesters" as well as "any interference of foreign forces".
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He did not mention any specific lawmaker or comments, but numerous US senators and Congress members, including House Speaker Nancy Pelosi, have affirmed the US commitment to human rights and urged the Hong Kong government to end the standoff.
Congress also has the power to pass legislation affecting Hong Kong's trading status.
The increasingly violent confrontations have plunged one of Asia's financial capitals into its worst crisis for decades.
On Saturday thousands of school teachers joined an 11th weekend of anti-government protests in Hong Kong, as shops pulled down their shutters and braced for another restive night.
Following an escalation in violence over the past few days, rallies are a test of whether the movement retains the broad support it has appeared to enjoy.