Turkish police have clashed with people marking the 13th anniversary of the detention of a PKK rebel group leader. <br /><br />Abdullah Ocalan founded and headed up the armed Kurdish separatists until his capture in Kenya in 1999, after a year-long manhunt. <br /><br />His supporters attempted to march to Istanbul's main Taksim Square for a sit-in.<br />http://www.euronews.net/