 Rather, according to Netanyahu, the persecution was fundamentally racial, and was a matter of envy of their success in Spanish society.This view has been challenged multiple times, and with some reasonable divergences the majority of historians either align with religious causes or with merely cultural ones, with no significant racial element.Challenging some of the claims of revisionist historians is Toby Green in "Inquisition, the Reign of Fear", who calls the claim by revisionists that torture was only rarely applied by inquisitors, a "worrying error of fact".