When you're in an incredibly emotional place, you'll wish you had infinite power to crush the demons. But once the emotions subside, you'll remember that there are no demons, just other emotional people (like yourself) and be glad your calm-minded self put barriers around what extreme-emotion-you can do.
In a sense, it's worth asking if extreme-emotion is the root cause of modern violence (nationalism, us-vs-them, victimhood rhetoric [Nazi's perceived themselves victims of Jews]).
When we lean-in to our emotional reactions, it's easy for the emotional reaction (e.g. War in Iraq) to be worse than the original spark (9/11).