Love (or unconditional love) for your enemies does not mean accept their behavior, though.
i never said it did. but think of it like a baby.. if a baby bit you, would you hate it? if it continued to bite you, to attack you, would you realize that it doesn't understand? or would you simply see it as out to get you personally, and view it as an enemy?
again, it doesn't have to do with physiology. it's psychological