Historical and political analyses show that elements of inquisitorial systems can manifest in various modern governance models, not exclusively in corrupt or lawless states. While modern societies rely on the rule of law, scholars note that highly bureaucratic, authoritarian, or ideologically driven regimes can also employ these methods to maintain control and suppress any kind of dissent.
The Inquisition, most notably in Spain, Portugal, and the Papal States, operated heavily on the premise that denunciation was a religious duty. This created a culture of paranoia, as anyone could accuse a target, and neighbors, friends, and family frequently denounced each other.
The Inquisition relied heavily on both anonymous denunciations and testimonies from convicted criminals. These practices formed the backbone of how tribunals operated and investigated potential heretics.
The identities of informers were strictly kept secret from the accused. While legal codes required a minimum number of witnesses (usually two) and theoretically allowed the accused to list known personal enemies to strike out biased accusers, the accused did not know enough to guess their accusers' identities, making this defense highly ineffective.
Unlike many standard secular courts of the time, the Inquisition accepted testimonies from individuals who were normally legally disqualified from bearing witness. They freely used testimonies from excommunicated individuals, convicted criminals, and even children or known accomplices to build their cases.
