Center for Religious Freedom

Pope Francis (R) and Sheikh Ahmed al-Tayeb, the Grand Imam of Al-Azhar, during a visit of the Pope in Cairo, April 28, 2017. (ANDREAS SOLARO/AFP/Getty Images)

(Antema/Getty Images)

Mourners carry the coffins of the victims of the blast at the Coptic Christian Saint Mark's church in Alexandria on April 10, 2017. (MOHAMED EL-SHAHED/AFP/Getty Images)

An Egyptian raises a cross made of palm leaves, originally intended for Palm Sunday celebrations, as he is being lifted by others at the Coptic Orthodox Patriarchate in Alexandria, April 9, 2017. (MOHAMED EL-SHAHED/AFP/Getty Images)

(stellalevi/Getty Images)

Supplicating Pilgrim at Masjid Al Haram, Mecca, Saudi Arabia, February 13, 2003 (Ali Mansuri/Wikimedia)

Jerusalem, November 10, 2014. (THOMAS COEX/AFP/Getty Images)

A cross is seen on a hillside overlooking the NPU (Nineveh Plain Protection Units) checkpoint on November 8, 2016 in Qaraqosh, Iraq. (Chris McGrath/Getty Images)