I truly hope you are not insulted, OWK, that Kreeft didn't mention atheists too by name (or did I miss that) as NOT being our enemy either. Sorry.
Nahh... In all honesty I know a good many Christians whom I'm happy to call friend. I respect their faith, and their practice of it.
It is only those who think their faith calls them to abuse, malign, and violate others in the name of God who I have a difficult time with.