There’s an art to it, but civility isn’t about avoiding all conflict. A prosecutor can have a perfectly civil conversation where they threaten someone with execution if they don’t accept a plea deal. A few mocking jabs about how incorrect someone’s statement was is fine as long as you’re mocking what was said and not their person, manor of speech, accent, speech impediment, etc.
There’s an art to it, but civility isn’t about avoiding all conflict. A prosecutor can have a perfectly civil conversation where they threaten someone with execution if they don’t accept a plea deal. A few mocking jabs about how incorrect someone’s statement was is fine as long as you’re mocking what was said and not their person, manor of speech, accent, speech impediment, etc.