Twenty-nine people were killed when a far-right Israeli settler opened fire inside a Hebron mosque 1994.
Palestinian have been marking the anniversary and protesting against Israel's expulsion of the international observer mission that was set up in the aftermath of the massacre.
The demonstrations have been relatively peaceful, but they highlight how divided, tense and militarised the city remains.
Al Jazeera's Harry Fawcett reports from Hebron.
