Relatives of Egyptian Coptic Christians purportedly murdered in Libya by self-proclaimed Islamic State militants mourn for those killed. Mohamed el-Shahed/AFP/Getty Images hide caption

itoggle caption Mohamed el-Shahed/AFP/Getty Images

Father Mina celebrates the Christmas Nativity Liturgy, the start of Christmas, at the Coptic Orthodox Church of St. George on Jan. 6 in Brooklyn, N.Y. Coptic churches around the country have witnessed a surge of Christians fleeing Egypt since the start of the Arab Spring. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images