I don’t agree with CSR, however, I have found it very useful to turn the tables when it comes to debating the Inquisition in particular. Pose a question to your Protestant friends: Ask them if they support the death penalty. (I’ve yet to meet an Evangelical who doesn’t). Now ask, “which crime is greater: depriving somebody of their earthly life, or by teaching heresy and deceiving somebody, depriving them of their eternal life?” Answer to that one is obvious
“Do not fear those who kill the body but are unable to kill the soul; but rather fear Him who is able to destroy both soul and body in hell.” Mt 10:28
Now, if promoting heresy is the greater crime, and we punish murderers with death, what is the right punishment for heretics?
You see, the logic followed by Catholics, Protestants, Muslims, etc., for centuries and centuries is easy to follow and hard to refute. If you take eternity seriously, how do you make a case to tolerate heresy? That case can be made, in a Christian framework (that was the major accomplishment of John Locke’s works), but it isn’t easy or obvious, and not one in a hundred Protestants (or, sadly, Catholics either) that I’ve run across can make that case. IMHO, to look down our noses at folks who lived before Locke is a kind of chronological snobbery, and running through these questions helps us respect those people who behaved the way they did. I respect them for how seriously they took matters of faith - it stands in stark contrast to the relativism we’ve all become accustomed to - even if, in hindsight, their methods were wrong.