TOPSHOT – A Venezuelan opposition activist clashes with police forces during a demonstration against President Nicolas Maduro in Caracas, on April 24, 2017. Protesters rallied on Monday vowing to block Venezuela’s main roads to raise pressure on Maduro after three weeks of deadly unrest that have left 21 people dead. Riot police fired rubber bullets and tear gas to break up one of the first rallies in eastern Caracas early Monday while other groups were gathering elsewhere, the opposition said. / AFP / RSS PHOTO / Federico PARRA