Libyans pray in Martyr's Square in the capital Tripoli on October 15, 2013 as Muslims around the world mark the Eid al-Adha holiday or "The Feast of Sacrifice" which commemorates Abraham's willingness to sacrifice his son Ismail on God's command. Cows, camels, goats and sheep are traditionally slaughtered on this holy Muslim day. AFP PHOTO / MAHMUD TURKIA        (Photo credit should read MAHMUD TURKIA/AFP/Getty Images)