Police in the Turkish city of Istanbul have pulled out of Taksim square, where the largest anti-government protests in years are taking place. Thousands of people are gathered in the square after days of violence sparked by plans to redevelop a nearby park. Police have fired tear gas and water cannon several times to break up the riots, and rioters have thrown rocks at police. Turkey's President Abdullah Gul has called for “common sense” to prevail, admitting that the Taksim square protests had reached a “worrisome level”. He called on all sides to be "mature", urging police to "act in...