Come on... Catholics have murdered unbelievers for their "heretical" faith for centuries of their history, going back well before the Inquisition. They were quite effective in the practice of genocide -- just ask the Cathars, Donatists, etc.... oh, wait, we can't, as they were hunted down and exterminated by the One True ChurchTM.
Corruption doesn't mean the tenets of a religion are wrong or as evil as some practitioners.
I'll see you a Reformation or two and raise you a few witch hunts. Cromwell was no bloody saint, either, and he was just one murderous 'reformer'. So, considering the centuries involved leading to the Inquisitions, kindly don't be so sanctimonious.
Frankly, the Inquisition has gotten a bad name. Charges of Heresy were brought by civil authorities. Punishments were dolesd out by the same, the Clergy being forbidden to use torture or take lives.
According to historian Thomas Madden:
The Inquisition was not born out of desire to crush diversity or oppress people; it was rather an attempt to stop unjust executions. Yes, you read that correctly. Heresy was a crime against the state. Roman law in the Code of Justinian made heresy a capital offense... [emphasis in original]
In the early Middle Ages, people accused of heresy were judged by the local lord, many of whom lacked theological training. Madden claims that "The simple fact is that the medieval Inquisition saved uncounted thousands of innocent (and even not-so-innocent) people who would otherwise have been roasted by secular lords or mob rule" [emphasis in original].[15]
https://en.wikipedia.org/wiki/Medieval_InquisitionBy providing some sort of venue for the trial of those accused, many were saved from the mob and given an opportunity to repent and go forth.
The corruption you seek is one exacted by secular authority.
Almost universally, the penalties for heresy included confiscation of property, a motive every bit as strong as the motive behind Civil Asset Forfeiture today--and one which can be equally abused.