The article isn't about Christians only, but all of Christianity, and what has been done in its name.  I agree that many of the aid efforts need to be discussed, showing some positive contribution by Christianity (if not in the article, through a link to an article on the Contributions of Christianity), but then it also needs to show what has happened illy in its name.  Al Qaeda would be a destructive force in Islam that most Muslims would reject without a problem, but still such discussion would belong in Islam.  Of course notice must be taken in the aid efforts that many organizations (though not all) require conversion or similar measures to recieve the aid.  That is something that Jesus would also be against, IMO.  We should discuss as much as possible, good article size is 30-50 kb excluding markup, as in the brackets for links, image code, reference markup, etc.  So we have plenty of room to add such things, given Christianity being such a large subject.

The witch hunts are certainly Christian, as are the crusades, though not all Christians supported either.... the Catholic Church, for example, ran the Crusades and the Orthodox city of Constanople was the sole target of one Crusade as the crusaders sacked the city and never actually fulfilled their mission.  All of this should be mentioned briefly.