Workers, farmers, miners, transport workers and teachers have been protesting for weeks in Bolivia, demanding measures to ease the country's worst economic crisis in four decades and calling for President Rodrigo Paz to step down. About 100 road blockades have been reported nationwide, a typical protest tactic in Bolivia which has triggered shortages of food, medicine and fuel in La Paz, neighbouring El Alto and other cities, and driven up prices of basic goods. Paz has warned that Bolivia is