The Holy Inquisition and the persecution and killing of Protestants were terrible, and those are very good points you made. Although I've heard the witch trials originated because there were some sinful people practicing witchcraft, and that the Crusades was a retaliation against attempted Islamic conquest of Europe.I didn't say equal. I said they're both neutral in my opinion. I wasn't talking about the Christian doctrine, yes that I believe is peaceful as you say. I am speaking in a historical context. The Inquisition, the slaughtering of Protestants, the Holy Crusades, witch trials....@SarahAlways - You think bloodshed in the name of Christianity is equal to that of Islam? You should be able to see that Christianity condemns those who kill in the name of it to a much greater extent than Islam to those who kill in the name of it.
But here's another example: persecution and killing of Jews conducted by Christians, especially during the Middle Ages and a few centuries afterward. Jews didn't deserve terrible acts like those against them, and if you're into the idea of time travel and changing history, I would plan out that persecution and killing of Jews generally becomes discontinued since the beginning of the Renaissance, especially when it spreads throughout Europe; although there will be a few prominent exceptions that I feel need to be kept intact, especially the Holocaust.
As a side note, I feel that though by all means terrible, the Holocaust and 9/11 terrorist attacks were necessarily evils that could still serve as great awakenings, both before and even after possible alterations of history.