I guess it is like trying to figure out how many people did Stalin have murdered. The answer is, we really don't know, and never will. That there were a substantial number killed in the Inquisitions, is true. No one knows how many. I do not hold present day people responsible for things that happened hundreds of years before they were born, any more than present day whites are responsible for slavery. They are not. I did not study about it much, but I thought the Spanish Inquisition was the only one. Not true. There were a number of them, over hundreds of years. My feelling however, is that in the tribulation period, the Inquisitions will be like Sunday school, compared to the end times killings.