In a moment of cynicism, I wonder if the world (multiplied tenfold in the last hundred years) has thought through what might happen if hundreds of millions of people in its most powerful country just start lying as hard as they can -- which seems to be the way things are going. Our mediated ways of understanding the way things are in the world won't necessarily pick up on this, but the context of everyday experience will change, and unrest will grow. And the mechanisms that have been developed to suppress unrest have grown quite potent, albeit quietly, over the last fifty years or so.
Ultimately, you do have to be a good person, if this civilization thing is going to work. ("You," not "one.") You don't have to accept the prevailing notion of the good, but you do need to formulate your own idea of the good, and especially in that case of exception, hold to it with all your being. The real danger is in the (now apparently increasing) thought that neither the common notion of the good, nor private notions of the good, nor the notion of private notions of the good can claim authority. In a crisis, of course, the wagons will circle around the first, but precisely because that will happen at the expense of the second and the third, we, quite wisely, won't entirely believe it.