Religion
In reply to the discussion: 50 Reasons to Boycott the Catholic Church [View all]...the fact of the Magdalene laundries, with sentences for reasons as specious as being 'flighty' or attractive to boys, with innocent women being held in what were work camps, sometimes for life. On top of these disgusting abuses any pregnant women, which could be the reason for their sentence but it is not unknown for it to be a priest or lay brothers child, needing a caesarean section were instead given a symphysiotomy but not for surgical reasons instead the church claimed a fear of barrenness. This left many women with life long problems. There was very limited need for this operation but not on the scale the Catholic church practiced it in Ireland.
http://en.wikipedia.org/wiki/Symphysiotomy
The Croatian genocide whereby the Catholic church attempted the eradication of Eastern Orthodox Catholicism. Including Franciscan monks leading death squads, Carl Savich writes. "In all, there would be 22 concentration camps in the NDH, almost half of which were commanded by Roman Catholic Croatian priests." NDH refers to the Independent Nation Of Croatia.
http://www.serbianna.com/columns/savich/007.shtml
http://www.jasenovac.org/whatwasjasenovac.php
There were also forced conversions on pain of death. Some of the monks also led squads armed with hammers who would stove peoples heads in and leave them where they lay after gouging their eyes out.
Or what about Pope Gregory who convinced a number of wealthy aristocrats that the end was nigh so convinced them they might as well give him all their wealth and chattels and retreat to a monastery. By this method he not only became one of the wealthiest men in Europe but it's largest slave owner.
The Donation of Constantine
Indulgences.
The post WWII 'Rat Lines'
The number of preventable sufferers of STC's thanks to the Vatican's stance on prophylactics.
Their involvement in the separation from their natural parents of 300,000 Spanish newborns for the lucrative adoption industry.
The list of crimes is so overwhelming I have just picked these few out. So I feel that to be called a filthy organization is quite mild yet still fitting.