The Cause and The Calling: The Crusades

Buy Raymond Ibrahim's book "Defenders of the West": https://a.co/d/2Gl8CJk
Footnotes from Ibrahim's book, chapter 1, show the source of information:
01:54 the prosecutions against the Christians by the Muslims in Israel
In any event, mass murders of Christian monks and pilgrims were common. An unsystematic list based only on Moshe Gil’s immense History of Palestine, 634–1099 includes the following events:
• Early in the eighth century, seventy Christian pilgrims from Asia Minor were executed by the governor of Caesura, except for seven who converted to Islam.
• Shortly thereafter sixty pilgrims, also from Asia Minor, were crucified in Jerusalem.
• Late in the eighth century, Muslims attacked the Monastery of Saint Theodosius near Bethlehem, slaughtered the monks, and destroyed two nearby churches.
• In 796 Muslims burned to death twenty monks from the Monastery of Mar Saba.
• In 809 there were multiple attacks on many churches, convents, and monasteries in and around Jerusalem, involving mass rapes and murders. These attacks were renewed in 813.
• In 923, on Palm Sunday, a new wave of atrocities broke out; churches were destroyed, and many died.
These events challenge the claims about Muslim religious tolerance.
Source: (1) Stark, Rodney. God's Battalions: The Case for the Crusades (pp. 84-85).
(2) Ibrahim, Raymond. Defenders of the West, p. 32

04:04
In 1009, Fatimid Caliph Hakim bi-Amr Allah, who reigned from 996 to 1021, ordered one of his officials: Destroy the Sepulchre church and have the people plunder it so thoroughly all traces of it were obliterated.
source: al-Maqrizi, Taqi al-Din. A Short History of the Copts and Their Church. Trans. S. C. Malan. London: D. Nutt, 1873.

04:38
Not content, Hakim further ordered the destruction of, according to Muslim accounts, some THIRTY THOUSAND CHURCHES throughout Egypt and Greater Syria. (NA: if I'm not mistaken, those 30K churches were destroyed in just one year)
source: (1) Ibrahim, Raymond. Sword and Scimitar: Fourteen Centuries of War between Islam and the West, pp 39-42. New York: Da Capo Press, 2018.
(2) Stark, Rodney. God’s Battalions: The Case for the Crusades, p. 91. New York: Harper One, 2009.

05:54 As Bernard Lewis writes, “the converted Turks sank their national identity in Islam as the Arabs and Persians had never done.” Accordingly, “under Turkish influence, Islam regained the zeal of the early Arab conquests and reopened holy war against its Christian foes on a significant scale.”
source: Lewis, Bernard, ed. and trans. Islam (from the Prophet Muhammad to the Capture of Constantinople, Vol 1: Politics and War), pp. 88.95. New York: Oxford University Press, 1987.

06:54
Then, the Seljuk sultan, Muhammad bin Dawud Chaghri (“Alp Arslan”) called on his followers: "Run through the countryside day and night. Slay the Christians and do not spare any mercy on them.”
Eagerly they obliged and penetrated westward; as a result, “cities were obliterated, lands were plundered, and the whole of Rhomaioi [Anatolia] was stained with Christian blood,” writes the Eastern Roman princess, Anna Komnene.
source: (1) Bostom, Andrew, ed. The Legacy of Jihad: Islamic Holy War and the Fate of Non-Muslims, p. 609. New York: Prometheus Books, 2005.
(2) Fuller, J. F. C. Military History of the Western World. Vol. 1, From the Earliest Times to the Battle of Lepanto. New York: Da Capo Press, 1987.

08:09 the tortures of Christian boys and youths by the Turks
source: Robert the Monk. History of the First Crusade (Historia Iherosolimitana), p. 219. Trans. Carol Sweetenham. Burlington: Ashgate, 2005.

08:40 the tortures of Christian women and their daughters by the Turks
source: Guibert of Nogent. The Deeds of God through the Franks, pp. 32-33. Middlesex: Echo Library, 2008.

09:33 the treatments of Christians in Jerusalem by the Turks
A medieval prelate and chronicler named William of Tyre lamented that conditions scarcely better in the Holy Land.
source: William of Tyre. A History of Deeds Done Beyond the Sea. Vol. 1., p. 71, Trans. Emily Atwater
Babcock and A.C. Krey. New York: Columbia University Press, 1943.

11:10 the killings of European piligrims
Nor were European pilgrims to Jerusalem spared: “As the Turks were ruling the lands of Syria and Palestine, they inflicted injuries on Christians who went to pray in Jerusalem, beat them, pillaged them, [and] levied the poll tax [jizya],” writes Michael the Syrian (b.1126).
Moreover, “every time they saw a caravan of Christians, particularly of those from Rome and the lands of Italy, they made every effort to cause their death in diverse ways.”
source: Bat Ye'or, The Decline of Eastern Christianity under Islam: From Jihad to Dhimmitude, p. 292, Cranbury, NJ: Associated University Presses, 2010.