Former Mexican president Vicente Fox (L), named by the Venezuelan opposition as an observer to the opposition-organized vote to measure public support for Venezuelan President Nicolas Maduro's plan to rewrite the constitution, is pictured at a polling station in Caracas on July 16, 2017. Authorities have refused to greenlight the vote that has been presented as an act of civil disobedience and supporters of Maduro are boycotting it. Protests against Maduro since April 1 have brought thousands to the streets demanding elections, but has also left 95 people dead, according to an official toll.  / AFP PHOTO / Ronaldo SCHEMIDT        (Photo credit should read RONALDO SCHEMIDT/AFP/Getty Images)
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