Have a look at http://www.makingpolicypublic.net/, where the Centre for Urban Pedagogy publishes a regular series of foldout posters that explain public policy. They act as go-between to introduce campaigners to designers and the results are impressive. Here's one on predatory equity (businesses who buy up rent controlled buildings, then harrass tenants until they leave).
Top: folded out as a poster
Below: information spread