Guilhem attacked the papacy not only for the Albigensian Crusade and the cruel sack of Béziers, but also for the failures of the Fourth and Fifth Crusades, papal imperialism, and the moral failings of the clergy. He alleged that avarice was the motive of the Crusades, which in his mind were directed only at the Greeks, fellow Christians. The singing of Figueira's "sirventes" was outlawed by the Inquisition in Toulouse, though the 1274 inquisition which condemned a burgher of Toulouse on the basis of knowing the "Roma tricharitz" does not refer to the third stanza of Guilhem's "sirventes", but to a vernacular work called "La Bible". On the basis of his language, such as the use of "matrem fornicationem" (mother of fornication) to describe Rome, even modern scholars have labelled him a heretic.