Few protests took place in December 2020 and there was no large-scale demonstrations in threat of the national security law. The imprisonment of Joshua Wong, Agnes Chow and Ivan Lam on 2 December aroused attention of the International community.

A Hong Kong media tycoon, Jimmy Lai, was charged with an offence under national security law. The charge was condemned by international community.

1 December

Arson attack on Police Sports and Recreation Club At about 1 am, nine petrol bombs were thrown at the open-air parking lot of the Police Sports and Recreation Club, burning the front of a truck. Police said that they had received a report of three men hurling the bombs. Police later seized a man nearby on Shek Kip Mei Street who carried pepper spray. He was arrested for a while and finally stated that had nothing to do with the case. On the 18 December, after checking a large number of CCTV footages, the police arrested three teenagers between the ages of 16 and 23 in Tai Wai, Kwai Chung and Tsim Sha Tsui, and seized raw materials for making petrol bombs on the rooftop of the three-nil building in Mong Kok. Three people were to be charged with arson and were scheduled to appear in West Kowloon Magistrates' Court on the next day.

2 December

HKBU student council president arrested According to a Facebook post by the Hong Kong Baptist University student union, its acting president Keith Fong was arrested by more than 20 police officers at 7 am and detained at Sha Tin Police Station on suspicion of perverting the course of justice, possession of offensive weapons, and resisting arrest, all in relation to his previous arrest in August 2019 during the protests. He was granted bail of HK$10,000. The case was to be brought to court on 8 December.

Sentencing of Joshua Wong, Agnes Chow, and Ivan Lam On 2 December, three former Demosisto members were sentenced for organizing and participating in a protest at Wan Chai Police Headquarters on 21 June 2019. The West Kowloon Magistrate Courts sentenced Joshua Wong, Agnes Chow, and Ivan Lam respectively to imprisonment of 13 and a half months, 10 months, and 7 months.

German human rights report criticizes China German Ministry of Foreign Affairs released its biennial human rights report on 2 December. In its chapter on China, the report mentioned that the introduction of the Hong Kong national security law had made the situation worse, and it would facilitate the Chinese security agencies to crack down on Hong Kong's civil society, opposition figures and independent media, eroding the one country, two systems principle meant to ensure a high degree of autonomy in Hong Kong.

3 December

Ted Hui went into exile Former Democratic Party member of the Legislative Council Ted Hui issued a statement on Facebook at about 8 pm, he officially announced that he would temporarily leave Hong Kong in exile and withdraw from the Democratic Party. Both the Democratic Party and Katarina Ammitzbøll, the Danish politician who had helped Hui obtain the invitation to the Denmark conference which he used as a pretext to leave Hong Kong, expressed their belief that he would be moving to the United Kingdom.

5 December

Ted Hui in London LegCo member Ted Hui was reported to have arrived at London Heathrow Airport in the UK. He said in an interview that he did not want to discuss details at the moment. He refused to disclose the whereabouts of his family, and did not want to talk more about whether to stay in the UK and what travel documents he used. A spokesperson for the Security Bureau issued a solemn statement, strongly condemning any fugitives who blatantly abandon security and absconded, describing it as "a shameful act of absconding in fear of crime." The police also strongly condemned the relevant actions and stated that they would trace the whereabouts of the fugitive suspect through various channels in accordance with the law and arrest him.

7 December

CUHK protesters arrested The National Security Department of the Hong Kong Police Force took over the investigation of the demonstration at Chinese University of Hong Kong the previous month and arrested eight people, aged between 16 and 34, including Kwun Tong District Councillor Eason Chan Yik-shun and research assistant Arthur Yeung Tsz-chun, both reportedly CUHK graduates, and Sai Kung District Council Member Isaac Lee Ka-yui. The police stated that the eight were suspected of participating in an unauthorized assembly, and three of them were suspected of inciting secession.

Bank accounts of Ted Hui are frozen After the former LegCo member, Ted Hui, announced his exile, the bank accounts of him and his family were frozen. They were once unfrozen, but they were frozen again on 7 December. HSBC said it would not comment on individual cases, but said that the relevant facts were distorted and not completely frozen, and that the parents' accounts were not affected. Hui later pointed out on Facebook that the account was completely frozen, and asked HSBC to respond positively and clarify which aspect was distorted and fully disclosed the incident. He said the incident affected the confidence of all HSBC customers in Hong Kong and the world.

Senior Superintendent of the National Security Department of the Hong Kong Police, Li Kwai-wah, did not call the name to respond to Hui's account being frozen, saying that the social networking site of the person concerned has been suspected of colluding with foreign forces, such as 'widening the international front in Hong Kong.'

In the evening, Hui stated on Facebook that the police accusations of his embezzling HK$850,000 in crowdfunding was purely discrediting, and disclosed the relevant crowdfunding records. He urged the police to produce objective evidence and criticized the police for suppressing and discrediting dissidents.

U.S. sanctions 14 vice chairmen of the National People's Congress Reuters quoted news reports that in response to the four Hong Kong pro-democracy legislators having been expelled by the local government with authority granted by the National People's Congress, the United States was preparing to sanction 14 NPC officials and Chinese officials. The initial news stated that Hong Kong officials were likely to be included. Those finally sanctioned were the 14 NPC vice chairpersons Cai Dafeng, Cao Jianming, Chen Zhu, Baima Chilin, Ding Zhongli, Hao Mingjin, Arken Imirbaki, Ji Bingxuan, Shen Yueyue, Wan Exiang, Wang Chen, Wang Dongming, Wu Weihua, and Zhang Chunxian. The sanctioned individuals, together with their family members, were banned from traveling to the U.S., any of their assets there were frozen, and U.S. companies and individuals were banned from dealing with them. U.S. Secretary of State Mike Pompeo issued a statement on the same day, accusing Beijing of continuously undermining Hong Kong's democratic procedures, causing the Hong Kong Legislative Council to exist in name only and degenerate into a rubber stamp that no longer had any meaningful opposition forces.

U.S. House of Representatives passes the Hong Kong People's Freedom and Choice Act U.S. House of Representatives passed the Hong Kong People's Freedom and Choice Act without any objection. The bill will be submitted to the Senate for deliberation and will be submitted to the President for signature after a vote by the Senate.

8 December

Pan-democrats arrested In the morning, the police came to arrest at least eight members of the pro-democracy camp. The arrested persons included Democratic Party chairman Wu Chi-wai, vice chairman of League of Social Democrats Leung Kwok-hung, Member Deng Shili, Civil Human Rights Front convener Figo Chan, former LegCo member Eddie Chu, Eastern district councillor Tsang Kin-shing, Lancelot Chan, and Chui Chi-kin. According to reports, the arrest was related to the unlawful assembly outside the Court of Final Appeal and the 1 July parade on 30 June 2020. They were suspected of inciting others to knowingly participate in an unauthorized assembly, organizing unlawful assembly and taking part in an unlawful assembly. They will appear at West Kowloon Magistrates' Court on 17 December.

Church raided and has its bank accounts frozen Good Neighborhood North District, which had organized the Guardian Action in the anti-extradition bill protest, stated that the HSBC bank accounts of the church and the pastor and preacher Ray Chan and his wife were frozen. In the evening, the police arrested a former female director and a former female employee of the church, suspected of concealing the receipt of 18 million yuan in donations and money laundering in the crowdfunding activities in the name of religion and supporting youth, which was higher than the amount raised by the church more than HK$8.9 million. The police have asked HSBC to freeze the five bank accounts involved in the case, involving a total of HK$25 million. The police also stated that the group directors and company secretaries involved in the case had left Hong Kong in mid-October this year.

China condemns US for passing Hong Kong People's Freedom and Choice Act by House of Representatives The Hong Kong and Macau Affairs Office of the State Council issued a statement condemning the US sanctions against 14 vice-chairmen of the Standing Committee of the National People's Congress. It criticized the US sanctions for completely violating international law and basic norms of international relations, and stated they were "hysterical political bullying". It further stated that the United States itself had established an airtight legal system for safeguarding national security, wantonly slandering, grossly interfering, and savagely suppressing China's legitimate actions in safeguarding national security and the constitutional order of the SAR, describing it as "blatant double standards and robber logic".

The Hong Kong Liaison Office strongly condemned the US sanctions, calling it a political bullying that seriously violated international law and the basic norms of international relations. It stated that China would never fear any arbitrary hegemony, and will never tolerate the rudeness of the United States in Hong Kong affairs and China's internal affairs. It stated that intervention will never shake the firm determination to safeguard national sovereignty, security and development interests.

The Commissioner's Office of the Ministry of Foreign Affairs in Hong Kong also expressed its strong indignation about the US sanctions.

US diplomat summoned by Beijing Chinese Vice Foreign Minister Zheng Zeguang summoned Robert W. Forden, the Chargé d'affaires of the US Embassy in China, to lodge a solemn protest against the US sanctions against the vice chairmen of the National People's Congress. Zheng stated that the US sanctions severely violated the basic norms of international relations, seriously interfered in China's internal affairs, severely undermined China-US relations, were arbitrarily unreasonable, and were bad in nature. China expressed its strong indignation and strongly condemned the action.

9 December

Nathan Law meets British politicians UK Home Secretary Priti Patel met with former Demosistō member Nathan Law who had fled to London, and Beatrice Li, the younger sister of Hong Kong Story member Andy Li, who was detained in Shenzhen after failing to escape to Taiwan. She pointed out that the United Kingdom would stand shoulder to shoulder with Hong Kong people and abide by fulfill the promise and defend the freedom of Hong Kong people. Hong Kong government subsequently issued a statement accusing the British side that when signing the Sino-British Joint Declaration, it made a clear promise not to grant Hong Kong citizens who hold British National (Overseas) passports the right of abode in the UK. It would be disregarding history to violate the facts and international obligations.

11 December