Justification?

Dear Answers Community R&S Section: In the beginning of the Xian Church, it's leaders had to motivate people to think and believe what they wanted them to somehow. Being the kind, nice and sensitive people they were, they chose fear and guilt. Then, we had the Crusades, Burning Times, the Spanish Inquisition, etc. in which case anyone who didn't agree with the Church was literally killed. Now, we have the Pope's newly declared Holy War on the Occult Spiritualities, in which I'm hearing more reports all the time of killings being made of anyone practicing what the Xian Church deems to be "Heresy", by Self-Proclaimed Witch Hunters. My question to all of you is, how is this justified?