I think you need to review YOUR history, the Crusaders invaded Palestine and did much of the same as the Zionists are doing, killing everyone, including their own. You as a Christian, should thank God for the likes of Saladin, may Allah have mercy upon him, who saved and conquered Palestine for the three Religions.
While Christians are certainly ashamed about many of the events that occurred during the Crusades, we have to be honest about the facts. (We should also point out that, while Christians are ashamed by many of the things done in the name of Jesus, we rarely see Muslims complaining about the atrocities committed by their leaders during the same time period. Indeed, Muhammad tells us that we should "thank God for the likes of Saladin.") The simple fact is that the Crusades were launched because Muslims were attacking Europe. European leaders, concerned about Muslim invasions of Western, Central, and Eastern Europe, decided to take the battle to the Middle East. They therefore rounded up a European army (many of them pagans) and attacked the Muslim empire.
It only seems fair to provide a brief timeline. I've taken the dates and material from historian Paul Crawford's "A Deadly Give and Take."
638--Jerusalem surrenders to a Muslim army. Muslims soon begin construction of a mosque on the Temple Mount. The leader of Jerusalem wept as he said: "Truly this is the Abomination of Desolation spoken of by Daniel the Prophet."
640s--Egypt and Armenia fall to Islam.
655--Muslims win a naval battle with the Byzantines; Muslims almost capture the Byzantine emperor.
711-712--Muslims invade Spain and kill the king. After the collapse of the Spanish army, Muslims begin sending raiding parties into France.
717--In the East, Muslims besiege Constantinople, the Byzantine capital.
732--The Muslim invasion of France is stopped at the Battle of Tours (though Muslims would continue raiding France for a long period).
800s--Muslims launch invasions of Sicily, Sardinia, and Corsica (south-central Europe). Muslims establish pirate havens along the coast of Italy and France.
846--Muslims attack the outer areas of Rome.
1009--An unorthodox Muslim leader named Hakim (a vicious persecutor of Christians and Jews) orders the destruction of the Church of the Holy Sepulchre in Jerusalem. Many Jews and Christians flee persecution.
1071--A Byzantine army is defeated by invading Muslims. In the years to come, Byzantine emperors send numerous appeals to Rome for help.
1091--Muslim leaders expel all Christian priests from the Holy Land.
1095--Christians and non-Christians in Europe begin preparing for the First Crusade.
1099--Crusaders take Jerusalem.
How do Muslims portray these events? The Muslim version of history goes something like this: "Muslims were just sitting around in the Middle East, minding their own business, living in peace with everyone, when a bunch of evil Christians decided to go on a killing spree." Of course, the invading European army committed all kinds of atrocities during the Crusades, as did the Muslim army. But we have to face the facts. The Crusades only happened because Europeans wanted to protect themselves from the invading Muslim armies. Like it or not, the Crusades did help stop the Muslim invasion of Europe.
We should take note of the Muslim view of the Crusades. As we've seen repeatedly on this blog, no one has a right to defend themselves against Muslims. If Muslims attack the caravans of the Meccans and start killing people, the Meccans should do nothing to defend themselves. If Muslims bomb Israel, the Israelis are supposed to take the bombings patiently, without retaliation. If Muslims invade Europe, the West should let it happen without lifting a finger to defend itself.
Of course, when Islam is attacked or insulted in any way, different rules apply. If people leave Islam, they must be killed. If someone draws a cartoon or makes a movie about Islam, he must die. If Israel does anything against any Muslim in the world, all Jews must die.