On the whole, we're agreed, but I still don't know how I'm supposed to choose values.

This fact is often obscured by the tendency for political disputes to impute 'bad' values to opponents rather than to recognize the actual disagreement, a tactic that ironically only works because of the wide agreement over the set of core values, if not the priority ordering.

I think this tactic works best when you're dealing with a particular constituency that agrees on some creed that they hold to be objective. Usually, when you call your opponent a bad person, you're playing to your base, not trying to grab the center.