Iranian men hold portraits of prominent Shiite Muslim cleric Nimr al-Nimr during a demonstration against his execution by Saudi authorities, on January 3, 2016, outside the Saudi embassy in Tehran. Iran and Iraq's top Shiite leaders condemned Saudi Arabia's execution of Nimr, warning ahead of protests that the killing was an injustice that could have serious consequences. AFP PHOTO / ATTA KENARE / AFP / ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)
