Police arrested 15 protesters today who blocked the entrance of the Chicago Board of Trade, as part of a day of protests targeting the CME Group, Inc. financial exchange. Protesters organized by the group Stand Up! Chicago were scheduled to interrupt the financial exchange's annual shareholder meeting this afternoon.

Demonstrators are protesting the fact that the CME Group got a state tax break at a time when Gov. Pat Quinn has proposed major social service cuts in his latest state budget. Check back in with Progress Illinois for more on today's protest.