How did the crusaders show themselves as hypocrites?

The crusaders often portrayed themselves as defenders of Christianity, yet their actions frequently contradicted this image. They engaged in brutal violence against both Muslims and fellow Christians, including the sacking of cities like Constantinople during the Fourth Crusade. Additionally, their motivations were often driven by personal gain, land acquisition, and wealth rather than purely religious devotion. This hypocrisy was evident in their failure to embody the very values of compassion and mercy that Christianity espouses.