- Arnaud Amaury, Abbot of Cîteaux.
First a potted history of the Papal Crusade, followed by some music:
There is a painting by Velazquez of Pope Innocent X in the Prado and he has a face of pure evil and yet he told Velazquez he was more than pleased with the representation. You have to stand in front of the painting to see and feel the malevolence of the man; chilling.
That Pope was about 400 years after Innocent III who ordered the Crusade against the Cathars. The only depictions of the latter are stylised being before the Renaissance invention of perspective so it is impossible to tell what he may have been like but his deeds speak volumes.
Why were medieval Popes so bloodthirsty? Not very Christian, were they!