Pope Francis on Saturday celebrated Mass with a crowd of about 15,000 in Cairo, Egypt, a visit made at the invitation of Sheikh Ahmed el-Tayeb, Grand Imam of al-Azhar and a leading moderate cleric and academic of Sunni Islam. The trip follows the Palm Sunday bombings of two Coptic Orthodox churches in Egypt that claimed at least 45 lives. "God is pleased only by a faith that is proclaimed by our lives, for the only fanaticism believers can have is that of charity!" Francis said in his homily.