Martyr apologists attacked cooperating Christians more fiercely than Muslims

Evidence

The apologists for the martyrs direct their fiercest anger and apoplexy not at the Muslims but at Christians who consort with Muslims, in particular for churchmen who follow the orders of the emir. … Alvarus rejects the very role of bishop in the emirate: he compares the fees that Saul paid to the palace officials to obtain the office of bishop to the thirty solidi that Judas was paid; paying the church’s money to the infidel in this way, he affirms, is simony. — John V. Tolan, Saracens, 541

Categorization

• XREF: Striking parallel with patterns in Milgrom’s law-merchant work where in-group defectors/collaborators attract more ire than out-group rivals — and to general scapegoating of quislings.