Announcement of the Democracy March (June 1) and candlelight vigil (June 4) in Hong Kong, commemorating the "June Fourth Incident".

"23" is Article 23 of the Hong Kong Basic Law, criminalizing activities "against the Central People's Government" (the government of the People's Republic) proposed in 2002. After many protests and demonstrations, the largest on July 1, 2003, it was withdrawn - temporarily.