There are such people, unfortunates who have to be angry before they can feel alive. I had sometimes wondered if it were some old relic of pagan superstition, the fear of risking the jealousy and anger of the gods, that made such people afraid of even small happinesses. Or perhaps it was only that tragedy is more self-important than laughter.
The important consideration is not your opponents, but yourself. It is bad to scream at them, not because it hurts them, they ought to be hurt, but because it hurts you. Anger is a form of recognition. It amounts to admitting that those people are important to you and that they have the power to hurt you. Actually, they haven't.