In recent years, localism has become the main political ideology of most university student unions, which emphasise that Hong Kong is different from the mainland.
June 4 marks the anniversary of the Tiananmen Square protests of 1989 and has become a day of peaceful demonstrations in Hong Kong. In early 1989, students in Beijing led demonstrations against China's central government calling for greater freedoms. In the early hours of June 4, the military moved in to remove the demonstrators. An unconfirmed number of unarmed civilians were killed in the crackdown.