Crusade epics show Muslims themselves destroying their own powerless idols.

Evidence

The center of the pagan cult, for the Chanson d’Antioche, is Mahomes, an idol held in midair by magnets. A defeated Saracen general, Sansadoines, strikes the idol, knocking it down and breaking it after it has shown itself powerless to secure victory for its devotees. Here again, the pagan enemy himself realizes the powerlessness of his idols and destroys them with his own hand. — John V. Tolan, Saracens, 671

Categorization

• XREF: Literary device parallels the ‘pagan admits his own error’ trope in medieval saints’ lives and disputation dialogue — self-refuting ‘enemies’ as a propaganda strategy.
• DEFINE: The floating magnet-held idol is a vivid iconographic image of medieval European misreading of Islam as idol worship.