Discussion of Beijing's decision to use tanks and troops against peaceful democracy protests on June 4, 1989 is all but forbidden on the mainland.
Authorities banned this year's gathering citing the coronavirus pandemic -- although Hong Kong has not recorded an untraceable local transmission in more than a month. But much has changed in Hong Kong over the last year as authorities seek to snuff out the city's pro-democracy movement using the security law to criminalise much dissent.
One campaign has called for Hong Kongers to write the numbers 6 and 4 -- representing June 4 -- on light switches at home."A regime can ban an assembly but it can never ban the indelible grievances in people's hearts," Lee Cheuk-yan, a now jailed democracy activist, wrote in a message published on his Facebook page on Thursday.