Choi, who teaches social policy and social studies, has taken part in every Victoria Park vigil and has taken his son there every year since he was born in 2008.
And the results are remarkable: at every Easter Vigil, 30, 40, or 50 new Catholics are either baptized as adults or received into the full communion of the church.
In it, Choi said he had attended every candlelit vigil but the organiser's theme of "Loving the country and the people is the spirit of Hong Kong" would keep him away.
And every parish church in the Russian tradition does a vigil every Saturday night".
His family held a vigil every year on the anniversary of his disappearance in a bid to keep his case in the public mind.
Adrienne Leonard, the co-founder and chief executive of Pain to Power, said the group hoped to clear obstacles that prevent parents from keeping a street-corner vigil every school day.
Mr. Ang, 51, has attended the vigil every year since 1989, when more than a million people poured into the streets to protest the violent crackdown in Beijing on the night of June 3-4.
Hong Kong is the only place in China where the June 4th massacre is commemorated every year at a vigil attended by tens of thousands of people.The crackdown in 1989 also revived another role for Hong Kong: as what the party calls a base for "subversion"; or what less biased observers might call an oasis of relative freedom.
In one five-year stretch in the 1980's, she joined a small group of missile opponents in a prayer vigil every Friday outside the gates of the base, this at a time when Wyoming had powerful voices in Congress, like Senators Alan K. Simpson and Malcolm Wallop and Representative Dick Cheney, all strong supporters of the MX program.
However, such a move easily opens the door to a "regime of structured contractual rights", whereby water is portioned off to the highest bidder, says Hall. Water is an undeniably emotive topic, and citizen groups have every reason to remain vigil.
