I hesitate to post here,since I have already been involved in a long and contentious thread concernig the Crusades. However, here it goes…
It is almost certain to me that the Crusdaes were evil. Now, I am not saying that they were not justified–according to the Just War doctrine, CCC 2309. However, the section of the catechism on war begins: “The fifth commandment forbids the intentional destruction of human life. Because of the evils and injustices that accompany all war, the Church insistently urges everyone to prayer and to action so that the divine Goodness may free us from the ancient bondage of war.” CCC 2307.
So, at least as I see it, basically all war is evil, or is bound up with and accompanied by evil. Now, war may be the lesser of two evils–the final and grave solution to a greater evil–in this case war is justified. Therefore, I am pretty confident that the Crusades were evil, though possibly no more evil and almost certainly less evil than other armed conflicts. I’ll leave it up to everyone else to bicker about whether they were justified or not.
By the way, I have read some of Madden’s work on the Crusades–excellent stuff.