Come off it lah. The crusades happened for a few reasons. For political and economic gains, as well as for personal wealth and glory. As for retaliating against the muslims, didn't Jesus teach about loving thy enemies and turning the other cheek?
That's why the Crusades were a long delayed response to moslem war crimes against Christians in the Holy Land. Jesus told us to turn the other cheek against insult and injury, not about genocide and extermination.
Oppies like you prefer us to turn the other cheek so as to facilitate your bad intentions towards Christians and PAP voters. Why not honestly admit it instead of pretending like you're so high and mighty and self-righteous?