The Secret Files of the Inquisition

Lately I've been discussing the Medieval Inquisition because of the PBS documentary, The Secret Files of the Inquisition. I'm drawing some hard lessons about it regarding the gross lack of communication from God as to what Christians should've done with heretics. My claim is that God is partially to blame for what his followers did to heretics because he was not clear in condemning such barbaric acts. A good God should've known better, if he exists at all. [Before you comment read through the three links above].