SANA'A, YEMEN - OCTOBER 18: Supporters of the Ansarullah Movement (Houthis) chant slogans to protest the death sentence given to Saudi Shia cleric Sheikh Nimr Baqir al-Nimr outside the embassy of Saudi Arabia in Sana'a, Yemen, on October 18, 2014. (Photo by Mohammed Hamoud/Anadolu Agency/Getty Images)