[fmrcurter]

I really think you need to crack open a few old world history books before you spout off anything about the Crusades. You'll be surprised to know that the Muslims and Jews fought side-by-side in Jerusalem to fend off the Franks in 1099.

Here's a brief brush ......

Ditto to you.
Research the Holy Land and the history of it. You will be surprised to see there is more to this than just Jerusalem.

After the death of the Islamic prophet Muhammad in 632, Muslim armies swept out of Arabia and, under the banner of jihad, conquered the lands that now form the heart of the Islamic world. In the Holy Land, the conquest of Jerusalem in 638 stood at the beginning of centuries of Muslim aggression; Christians in the Holy Land faced an escalating spiral of persecution. A few examples: early in the eighth century sixty Christian pilgrims from Amorium were crucified; around the same time the Muslim governor of Caesaria seized a group of pilgrims from Iconium and had them all executed as spies - except for a small number who converted to Islam. Muslims demanded money from pilgrims, threatening to ransack the Church of the Resurrection if they didn’t pay. Later in the eighth century, a Muslim ruler banned displays of the cross in Jerusalem. He also increased the special poll tax (jizya) that Christians had to pay (Muslims were exempt) as ordained by Qur’an 9:29, and forbade Christians to engage in religious instruction of their own children and fellow-believers.
Brutal subordination and violence became the rule of the day for Christians in the Holy Land. In 772, the caliph al-Mansur ordered Christians and Jews in Jerusalem to be stamped on their hands with a distinctive symbol. Conversions to Christianity were dealt with particularly harshly. In 789, Muslims beheaded a monk who had converted from Islam and plundered the Bethlehem monastery of St. Theodosius, killing many more monks. Other monasteries in the region suffered the same fate. Early in the ninth century the persecutions grew so severe that large numbers of Christians fled for Constantinople and other Christian cities. Fresh persecutions in 923 saw more churches destroyed, and in 937, Muslims went on a rampage in Jerusalem on Palm Sunday, plundering and destroying the Church of Calvary and the Church of the Resurrection.
After a period of Byzantine resurgence, in 1004, the sixth Fatimid Caliph, Abu ‘Ali al-Mansur al-Hakim (985-1021) turned violently against the faith of his Christian mother and uncles (two of whom were Patriarchs) and ordered the destruction of churches, the burning of crosses, and the seizure of church property. He moved against the Jews with similar ferocity. Over the next ten years thirty thousand churches were destroyed, and untold numbers of Christians converted to Islam simply to save their lives. In 1009, al-Hakim gave his most spectacular anti-Christian order: he commanded that the Church of the Holy Sepulcher in Jerusalem be destroyed, along with several other churches (including the Church of the Resurrection). The Church of the Holy Sepulcher, rebuilt by the Byzantines in the seventh century after the Persians burned an earlier version, marks the traditional site of Christ’s burial. Bizarrely, the church had served as the model for the Al-Aqsa Mosque. The Caliph al-Hakim commanded that the tomb inside be cut down to the bedrock. He ordered Christians to wear heavy crosses around their necks (and Jews heavy blocks of wood in the shape of a calf). He piled on other humiliating decrees, culminating in the order that they accept Islam or leave his dominions.
The erratic caliph ultimately relaxed his persecution and even returned much of the property he had seized from the Church. Some of al-Hakim’s changed attitude probably came from his increasingly tenuous connection to Islamic orthodoxy. In 1021, he disappeared under mysterious circumstances; some of his followers proclaimed him divine and founded a sect based on this mystery and other esoteric teachings of a Muslim cleric, Muhammad ibn Isma’il al-Darazi (after whom the Druze sect is named). Thanks to al-Hakim’s change of policy, which continued after his death, in 1027 the Byzantines were allowed to rebuild the Church of the Holy Sepulcher.
Nevertheless, Christians were in a precarious position and pilgrims remained under threat. In 1056, the Muslims expelled three hundred Christians from Jerusalem and forbade European Christians from entering the Church of the Holy Sepulcher. When the fierce and fanatical Seljuk Turks swept down from Central Asia, they enforced a new Islamic rigor making life increasingly difficult for both native Christians and pilgrims (whose pilgrimages they blocked). After they crushed the Byzantines at Manzikert in 1071 and took the Byzantine Emperor Romanus IV Diogenes prisoner, all of Asia Minor was open to them - and their advance was virtually unstoppable. In 1076, they conquered Syria; in 1077, Jerusalem. The Seljuk Emir Atsiz bin Uwaq promised not to harm the inhabitants of Jerusalem, but once his men had entered the city, they murdered 3,000 people. The same year the Seljuks established the sultanate of Rum (Rome, referring to the New Rome, Constantinople) in Nicaea, perilously close to Constantinople itself; from here they continued to threaten the Byzantines and harass the Christians all over their new domains.
The Christian Empire of Byzantium, which before Islam’s wars of conquest had ruled over a vast expanse including southern Italy, North Africa, the Middle East, and Arabia, was reduced to little more than Greece. It looked as if its death at the hands of the Seljuks was imminent. The Church of Constantinople considered the pope a schismatic and had squabbled with him for centuries, but the new Emperor Alexius I Comnenus (1081-1118), swallowed his pride and appealed for help. And that is how the First Crusade came about: it was a response to the Byzantine Emperor’s call for help. http://www.wikiislam.com/wiki/Persec...of_non-Muslims