Arturas Rosenbacher (@USAanon) shot this photograph of windows in the building where the Chicago Board of Trade is located. The CBOT was established in 1848, and is the world's oldest futures and options exchange.

"We are the 1%," the sign reads, an apparent response to the Occupy Chicago (and Occupy Wall Street) protests. "We are the 99%" is one of the mantras of that movement for financial reform.

There's a related article at the Village Voice.