Protesters clash with police at Istanbul's Gezi Park
7 July 2013 Last updated at 02:43 BST
Turkish riot police have been using tear gas and water cannon to disperse protesters trying to enter a park cordoned off by police in Istanbul.
Thousands have converged on Gezi Park, near the city's Taksim Square - which was a focus of unrest last month.
Catharina Moh reports.