Red belt is about being able to recognize anger and its source. We all recognize anger, but often we neglect the cause. Every action has a cause, there is always a reason why. We must be empathetic with all, even when compassion isn't possible.
People become self consumed, that is, consumed with their idea of Self. The more isolated the ego becomes the more threatening life becomes, because everything that is not Self threatens its existence. Have compassion for these people for they are alone in their isolation.