Flames engulfed the main anti-government protest camp on Kiev's Independence Square as riot police tried to force demonstrators out following the bloodiest clashes in three months of protests. The iconic square turned into a war zone as riot police moved slowly through opposition barricades, hurling stun grenades and using water cannon to clear protestors. At least thirteen people were killed and scores injured today, as protestors took back control of Kiev's city hall just two days after vacating the building. Also, see: Ukraine's Revolution Is Being Broadcast Live.