A hundred people demanded an end to police violence that has killed 50 people this year at a protest outside Jamaica's security ministry in Kingston on Tuesday.
They carried victims' pictures and placards reading: "No state killings" and "Peace cannot be built on impunity."
Protester Elaine Wilson said her sister was fatally shot in the head on March 16 in the poor community of Cassava Piece.
Diane Wilson, a mother of two, was walking home from a 13-year-old girl's wake when officers starting firing wildly during a raid.
Police have killed nearly 30 people this month.
National Security Minister Peter Bunting said: "I think the outrage over the recent loss of a number of innocent lives is an encouraging signal that society is growing intolerant of the violence subculture."