Gonna have to side with GreatBlackJoy on this one.
Crust and anarcho-punk's philosophy is a utopian one. They believe that under certain circumstances, we can deny the very laws of nature and set up a world where not only do massive populations live without a leader or any clear idea of what should be done (be it through means of police action OR unanimous consensus), but in the process, we can all live happily ever after with no violence, inequality, rainy days, or sad faces.
Don't get me wrong, I think crusties live a very respectable and honest way of life, but their worldview is in no way compatible with mine, which makes for many good long nights spent debating. When it's all said and done, it's a dead end conversation though. We must always agree to disagree.
Crust and christianity should just reconcile their differences and form Crustianity.