A woman cries during the funeral of her son, a student who died at a protest, in San Cristobal

A woman cries during the funeral of her son, a student who died at a protest, in San Cristobal

Carmen Gonzalez (C) cries during the funeral of her son Jimmy Vargas, a student who died at a protest, in San Cristobal, about 410 miles (660 km) southwest of Caracas, February 26, 2014. Pope Francis called on Wednesday for an end to violence in Venezuela that has killed at least 13 people and urged politicians to take the lead in calming the nation’s worst unrest for a decade. REUTERS/Carlos Garcia Rawlins (VENEZUELA – Tags: POLITICS CIVIL UNREST)