Why did the Catholics wipe out other Christians in the early crusades? What were they hiding ot tring to stop?
Among the most notable and controversial beliefs of the Cathars was the idea of two gods or deistic principles, one good and the other evil. The Catholic Church asserted this was antithetical to monotheism, a fundamental principle that there is only one God, who created all things visible and invisible, as stated in the Nicene Creed. Cathars believed that the good God was the God of the New Testament, creator of the spiritual realm, whereas the evil God was the God of the Old Testament, creator of the physical world whom many Cathars identified as Satan. Cathars believed human spirits were the sexless spirits of angels trapped in the material realm of the evil god, destined to be reincarnated until they achieved salvation through the consolamentum, a form of baptism performed when death is imminent, when they would return to the good God as "Perfect".[7]
The Catholic Church denounced Cathar practices, particularly the consolamentum ritual. From the beginning of his reign, Pope Innocent III attempted to end Catharism by sending missionaries and persuading the local authorities to act against them. In 1208, Pierre de Castelnau, Innocent's papal legate, was murdered while returning to Rome after excommunicating Count Raymond VI of Toulouse, who, in his view, was too lenient with the Cathars.[8] Pope Innocent III then abandoned sending Catholic missionaries and jurists, declared Pierre de Castelnau a martyr and launched the Albigensian Crusade in 1209. The nearly twenty-year campaign succeeded in vastly weakening the movement; the Medieval Inquisition that followed ultimately eradicated Catharism by 1350.