A week ago I suggested the saying above was the perfect slogan for our current totalitarian circumstances. Today, I'll go a step further and state that "no one is safe until all are safe" is more than a slogan, it's an edict - an official proclamation issued by the totalitarian authorities that have seized control of the material world.
The sheer brilliance of the edict lies in its incomprehensible absurdity. Despite deceivingly noble declarations to the contrary, no force can ever manifest conditions in which all are safe. Any knee jerk reactionaries that claim God could easily manifest such conditions on earth must immediately stop and ask themselves why He hasn't done so - to say nothing of why He refuses to do so.
The matter is quite simple; God did not create this world and agree to put us in it for us to be safe; He created this world and agreed to put us in it to grant us the opportunity to be saved.
Salvation is the only safety anyone can hope to find in this world; all other hopes of safety are misguided and delusional.
But think of the safety salvation offers!
Consider how it pales in comparison to any and all temporal offers of welfare, security, well-being, and protection. Now consider the nature of all current offers of welfare, security, well-being, and protection being extended to us. It doesn't take much imagination to understand that the edict of "none are safe until all are safe" is little more than a prison sentence. The price of the temporal safety being peddled by those aligned against God and creation is the eternal incarceration of your soul.
Replace no one is safe until all are safe with no one is saved until you are saved and you draw a little closer to the underlying reality and purpose of your mortal existence on earth.
Accept the gift of salvation and you will be eternally safe. Moreover, you will be temporally free to explore the virtue of living "dangerously" in this mortal life.
Freed from the false power of death, you can embark upon the "dangerous" divine-human spiritual path of answering the call of God.
No one is safe until all are safe is an entropic state of non-being. The apparent safety conceals a most grievous danger - spiritual death.
No one is saved until you are saved initiates a negentropic state of being. The apparent danger reveals a most precious safety - spiritual life.