When the religious Christians leaders from Europe made their annual treks to visit the Holy Land, the Muslims charged a tariff or refused their entrance entirely.
Upon returning home, Christian leaders in England, Italy and other countries decided to "defend" their most holy of holy sites by evicting Muslims (who had first "evicted" the Jews and Christians living there).
That the "evictions" were by force, is undoubtedly true but the "victims" were not only the Muslims, as they would have you believe, especially in today's world.
That is obviously not true. There are still over a million Christians in Egypt and still quite a few in Iraq and Lebanon.
Christians continued to be able to visit the holy places...I believe the first problems were centuries later with certain fanatical Muslim leaders who caused problems for Christian pilgrims. Then the Byzantines were defeated by the Turks at Manzikert in 1071 and the Byzantine emperor looked to the West for help. Pope Urban II made the recovery of Jerusalem rather than aiding the Byzantine emperor the main goal.