Headline: The Ultimate Smoking Gun of Liberal Media BiasLink: http://pjmedia.com/eddriscoll/2013/05/01/smoking-gun-of-media-bias/Publication Date: Thursday, May 2, 2013Primary Source: PJ MediaNon-Cato Author: Ed DriscollType: new media postFormat: New MediaNature of Mention: mentionedScholar: CatoResearch Area: Government and PoliticsSubjects: the Koch brothers