It's from Paul Krugman's blog at the New York Times, and shows the great merriment that was felt when the financial markets were finally liberated, yes, liberated from that horrible straight jacket of government regulation. To make the meaning more obvious, a chainsaw was used to cut through all that red tape.
Something for all of us to be grateful for, this Thanksgiving season, right?
Well, it gives us a few cynical lols. And a reminder that we must not lose our collective memory.