« Be the change you want to see in the world »
It is everything BUT a moralizing sentence; it is not meant to teach us to mind our “own business”, it is simply one basic law of nature. It is absolutely true that we must begin by ourselves when we want to change the world.
Also, how can you change something you have no control over if you can’t even change things you can control?
The truth is: our life is simply a microcosm of the world and universe.