Setting the scene
Hong Kong protests began March 2019 against an extradition bill and grew into a pro-democracy movement. At their peak in June, 2 million people (27% of population) marched. Protesters demanded universal suffrage and an investigation into police violence.
What happened
Protests lasted through 2019 with clashes, airport occupations, and university sieges. China imposed the National Security Law in June 2020, crushing dissent. The movement demonstrated Hong Kongers' desire for autonomy.
Why it still matters
The protests showed the limits of 'one country, two systems' and China's willingness to override freedoms.
Background
Beijing later imposed a security law.