Over 500,000 people protest against efforts to pass anti-sedition legislation in Hong Kong.
Hong Kong Basic Law Article 23 (Chinese: 香港基本法第二十三條) is an article in the Basic Law of Hong Kong. It states that Hong Kong "shall enact laws on its own to prohibit any act of treason, secession, sedition, subversion against the Central People's Government, or theft of state secrets, to prohibit foreign political organizations or bodies from conducting political activities in the Region, and to prohibit political organizations or bodies of the Region from establishing ties with foreign political organizations or bodies."
Attempts to implement the article and create the Hong Kong national security law have seen protests, particularly in 2003 and 2019. In 2020, the mainland National People's Congress imposed a security law on Hong Kong under Article 18 of the Basic Law.