Clashes at Venezuela protest against 'dictatorship'

Violence erupted for a third straight day at protests against Venezuelan President Nicolas Maduro on Thursday, escalating tension over moves to keep the leftist leader in power.Opposition protesters chanting "No more dictatorship!" hurled stones at National Guard riot police who blocked them from marching on central Caracas.The police responded with tear gas and water cannon, prompting chaos on the eight-lane highway where some 5,000 protesters had tried to break through army barricades.