An Iranian woman holding a placard takes part in a demonstration outside the Saudi embassy in Tehran on January 3, 2016, against the execution of prominent Shiite Muslim cleric Nimr al-Nimr by Saudi authorities. 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 / ATTA KENARE        (Photo credit should read ATTA KENARE/AFP/Getty Images)