As others have observed, the veneer of civilization is thin.
The veneer of civilization is thin, but nowhere near as thin as New Orleans post-Katrina would indicate. The problem with New Orleans was that all the people that keep things in order had evacuated. So, what you had left were people without all that much civilization to begin with..
But we are assured daily that religion is superfluous in our modern world. Man was made in God's likeness. For a reason. To elevate him above the rank of animal. Animals are amoral feeders. Man is better than this. But the agnostics would have you believe we are hard wired for morality. Yeah right.