All it took was a single economic data point:
And things started breaking down in a real hurry. Here is the Dow Jones Composite.
My principal focus, financials, really took it on the chin. Just look at the broker/dealer index ($XMI):
At this point, our main enemy is the S&P 500, which has still respected support. We need to break 2945 on the cash index to get things really started.