In defense of Christianity, most crimes committed by the Church in history have been due to a perversion or mutation of the original message, and the people responsible were Christians in name only, as opposed to -being- a Christian.
Where does "love your neighbor" fit in with "God hates fags" or clinic bombings? It doesn't, at all.
For example, when the Mennonite church first formed in the middle ages as a return to faith-driven Christianity (as opposed to indulgence-based, pay-to-play Christianity), the Catholics hunted, tortured, and executed many of them for being "heretics", which roughly translates to "threatens our nice system of keeping the peasants in check and making some cash".