Billboard Equates Climate Believers to Crazy Killers Heartland Institute ends ad campaign 'experiment' By John Johnson, Newser Staff Suggested by Fondue Posted May 4, 2012 6:24 PM CDT 66 comments Comments Unabomber Ted Kaczynski made it onto the first billboard. (AP Photo/Elaine Thompson, file) (Newser) – A conservative think tank has pulled a controversial billboard that compared those who believe in global warming to deranged killers. The Heartland Institute was taking heavy flak for the digital sign in Chicago that featured a photo of Unabomber Ted Kaczynski and the question, "I still believe in Global Warming. Do you?" reports the Washington Post's Plum Line blog. The institute explained on its website that the "experiment" was designed to be deliberately provocative. It had originally planned to follow up with images of Osama bin Laden and Charles Manson, among others. An earlier post from the site explained that "the most prominent advocates of global warming" are "murderers, tyrants, and madmen." It added, helpfully, that "not all global warming skeptics are murderers or tyrants," notes the Guardian, which first spotted the billboard. Andrew Sullivan at the Daily Beast thinks it's everything that's wrong with the right—"a refusal to acknowledge scientific reality; and a brutalist style of public propaganda that focuses entirely on guilt by the most extreme association." GOP Rep. James Sensenbrenner, a prominent skeptic about global warming, vowed to pull out of an institute-sponsored conference later this month if the ad campaign continued; it ended soon after.