Note: This is not offered up as any insight into one of the darkest days in our nation's history. What this is offered for is an understanding of the economic and energy situation we find ourselves in right now.
Now, are they all like this gentleman? I deeply doubt it. Did they all make money on this terrible day? Certainly not. Still, this is instructive, because certainly, there are enough of them around that would think and act this way that people across the world would pay a terrible price.
Remember: markets are manifestations of group-think. Nothing more. All you need to do is watch a real-time chart of the trading of the S&P index to see that simple fact. It would take a very few people, making trades in one direction or another to start a stampede.
If you really want to understand the markets, go down to the local aquarium and watch a school of sardines swim about.