One of the great movies of all time was JUDGEMENT AT NUREMBERG. The movie depicts the events of the post-war trials of the Nazi leaders in the late 1940s.
Spencer Tracy portrayed chief judge Dan Haywood. At the end of the trials, Haywood summarizes in this way:
... the most shattering truth that has emerged from this trial (is that) Had all the defendants been degraded perverts, had they all been sadistic monsters and maniacs these events would have no more moral significance than an earthquake or any other natural catastrophe. But this trial has shown that under national crisis, ordinary and even able and extraordinary men can delude themselves into the commission of crimes so vast and heinous that they beg of the imagination.
When I read those words, I cannot help but think of Judges 18:1 In those days Israel had no king. Humanity is never self-sufficient enough, nor brilliant enough, to avoid moral catastrophe without God.