Security forces use water cannons to disperse protesters outside a courthouse in Silivri, where a hearing on people charged with attempting to overthrow Prime Minister Tayyip Erdogan's Islamist-rooted government is due to take place April 8, 2013. Turkish police fired water cannon, teargas and pepper spray on Monday as they clashed with thousands of activists protesting outside a court in support of 275 people accused of plotting to topple the government, forcing a delay in the hearing. Defendants in the trial of the "Ergenekon" group, an alleged underground network of secular arch-nationalists, were expected to begin their final defences on Monday after prosecutors last month demanded life sentences for 64 of them. REUTERS/Osman Orsal (TURKEY - Tags: POLITICS CIVIL UNREST CRIME LAW)