Demonic Evil versus Banal Evil

The difference between demonic and banal evil seems to be a matter of intent. Within demonic evil, there is an intent to do harm to another person or people, for whatever reason. Within banal evil, it appears that there is no real intent to do harm, you just sort of don't notice it's happening. Sort of like the difference between shooting someone to death in an alley and being the one hearing the gunshots on the street and not calling the police. The shoot is displaying a sort of demonic evil, whereas the bystander, by their inaction, demonstrates the banal.