action
That is not true understanding. Anyone can say that they understand. But when they cannot even move on, then what do they understand?
They are merely grasping against their own distorted beliefs. [In order to stay sane, or perhaps other reasons.] It is the same way as someone yelling out justice with bloodshed.
What kind of world will that be, a world born from fighting? What kind of world can be called just when only one side is at peace?