What do you care if a couple of Jews killed another Jew 2000 years ago. Do you condemn all the Roman’s for all the crucifixions that they committed while taking over the Middle East and North Africa 2000 years ago.
The Crusades, were organized by Christians after centuries of Muslim wars of expansion. Their primary objectives were to stop the expansion of Muslim states and reclaim Christian lands.
Do they need Christian love? Have you forgotten what 2,000 years of Christian love looked like in Europe, with all the wars, pogroms, inquisitions, genocides, slave trading, and the decimation of native tribes throughout the New World and tribal Africa. All the conquers that came to the New World were flying the flags of Christian Kings with the blessings of the Church