In a video leaked from his prison cell, Lopez urged demonstrations to demand a firm date for this year's legislative elections and freedom for jailed opposition politicians like himself who human rights groups consider political prisoners. Capriles, who came close to beating President Nicolas Maduro in the 2013 presidential election, led a march through the inland town that is home to a prison where former opposition mayor Daniel Ceballos was transferred from a military jail last week. In Caracas, a sea of sweltering protesters shut down a main thoroughfare in wealthy eastern Caracas for hours, slurping up sweetened crushed ice, shading themselves with umbrellas and waving flags among the mango trees and half-finished buildings. Ceballos' wife, Patricia, who won a landslide election victory to replace her husband as mayor of the restive western city of San Cristobal was a crowd favorite. Protesters were most eager to talk about the country's pervasive problems of shortages, inflation and violent crime, the same issues that fueled last year's demonstrations and have worsened in the months since.