Venezuelan National Guard riot police form a line as they clash with opposition demonstrators during a protest against President Nicolas Maduro in Caracas, on May 10, 2017. Venezuelan protesters hit the streets on Wednesday armed with "Poopootov cocktails," jars filled with excrement which they vowed to hurl at police as a wave of anti-government demonstrations turned dirty. / AFP PHOTO / JUAN BARRETO (Photo credit should read JUAN BARRETO/AFP/Getty Images)
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AFP JUAN BARRETO

TOPSHOT - Riot police and demonstrators protesting against President Nicolas Maduro's government clash in Caracas on April 8, 2017. The opposition is accusing pro-Maduro Supreme Court judges of attempting an internal "coup d'etat" for attempting to take over the opposition-majority legislature's powers last week. The socialist president's supporters held counter-demonstrations on Thursday, condemning Maduro's opponents as "imperialists" plotting with the United States to oust him. / AFP PHOTO / FEDERICO PARRA (Photo credit should read FEDERICO PARRA/AFP/Getty Images)
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AFP FEDERICO PARRA

An opposition activists throws back at riot police a tear gas grenade during a protest against President Nicolas Maduro's government in Caracas on April 4, 2017. Activists clashed with police in Venezuela Tuesday as the opposition mobilized against moves to tighten President Nicolas Maduro's grip on power. Protesters hurled stones at riot police who fired tear gas as they blocked the demonstrators from advancing through central Caracas, where pro-government activists were also planning to march. / AFP PHOTO / JUAN BARRETO (Photo credit should read JUAN BARRETO/AFP/Getty Images)
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AFP JUAN BARRETO