In 1099, Crusaders captured Jerusalem. The Crusades were a Catholic Church-sponsored movement to "liberate the Holy Land from the infidels." (En route, the Crusaders carried out a campaign of rape and pillage; an estimated 40% of European Jewry was slaughtered in the process.) The day following their conquest of Jerusalem, the Crusaders murdered all the city's Jews, by herding them into a synagogue and setting it on fire. Jews were barred from Jerusalem for the next century. Muslims were also victims of the Crusaders, which historians believe planted a deep-seeded hatred of the West.