Thousands have gathered in Istanbul's Taksim Square, demanding justice for a protester killed by police fire during demonstrations which have swept Turkey this month.
The protesters also denounced the killing of a Kurdish demonstrator by paramilitary police in a mainly Kurdish town a day earlier.
A brutal police crackdown on a peaceful environmental sit-in ignited the nationwide protests against Prime Minister Recep Tayyip Erdogan's government.
Four people have died during nearly three weeks of demonstrations.
The demonstrators in Taksim were angry over a court decision that released a police officer from custody pending his trial for the killing of a protester in Ankara.
Earlier hundreds in southeast Turkey attended the funeral of the Kurdish youth, who was shot while protesting the construction of a military post.