Demonstrators clash with the riot police during a protest against Venezuelan President Nicolas Maduro, in Caracas on April 20, 2017.
Venezuelan riot police fired tear gas Thursday at groups of protesters seeking to oust President Nicolas Maduro, who have vowed new mass marches after a day of deadly unrest. Police in western Caracas broke up scores of opposition protesters trying to join a larger march, though there was no immediate repeat of Wednesday's violent clashes, which left three people dead. / AFP PHOTO / Federico PARRA        (Photo credit should read FEDERICO PARRA/AFP/Getty Images)