Only do what is correct and necessary. This is being in harmony with the world. When we have wrestled with the enemies of our own lives and minds, making them allies, we then have the potential to befriend the enemies of the world. This is called reconciliation. This is called peace.
Mindfulness then needs to be in the field of social as well as personal action.
It is the ground where compassion is born. This compassion is not the self-aggrandizing messianic form of saviorism. It is sober and even ruthless, precise and economical. It is context sensitive and aware of consequences. Often it is invisible.