Hong Kong activist Chiu Yan-loy lights candles in private to mark the 33rd anniversary of Tiananmen crackdown as the city closed large parts of Victoria Park, once the site for massive annual vigil. Police conduct stop and search around the closed parts of the Victoria park. Their presence remain heavy into the night. Discussion of the events of 1989, when China set troops and tanks on peaceful protestors, is all but forbidden on the mainland. Semi-autonomous Hong Kong had been the one place in China where large-scale remembrance was still tolerated -- until two years ago when Beijing imposed a national security law to snuff out dissent after widespread pro-democracy protests in 2019. IMAGES AND SOUNDBITES