Thousands of Nicaraguans have been taking to the streets this week to protest against the killing of anti-government demonstrators. They say Daniel Ortega’s Sandinista Front (FSLN) has betrayed the people in whose name it once fought. For President Ortega - a one-time revolutionary icon - the demonstrations highlight a significant shift. With the Castros out of power in Cuba, and other giants of the Left dead or in jail, Mr Ortega is the last of a generation of Latin American revolutionaries still in office. Ritula Shah and her guests discuss why left-wing politics lost ground in Latin America, and what the future holds for leftist politics in the region.