What needs to be established not whether Christians and Muslims did wrong each other in the past, but whether they can live in peace. And the answer to that is a resounding “yes!”. I know, some naysayer will immediately object that both Christianity and Islam have an mixed record of interpretation of whether converting the other to your religion is a religious duty or not. The point here is not whether some Christians or Muslims do (or did) believe that they have to convert each other at all cost, but whether there are those who do not believe so. As long as this is a possibility compatible with one’s faith this is sufficient.