Participant Media—the civic-minded lefty production outfit that gave us Food, Inc., The Informant!, Casino Jack and the United States of Money, and Waiting for “Superman”—will promote its new release The Help with a free storytelling workshop for high school students tonight at 7 PM at the Chicago Historical Society. Students will present their work at a concluding program hosted by comedian Brian Babylon. The Historical Society is on Clark at North Avenue; RSVP required at The Moth.com.