Joining the scores of corporations that have recently dropped their support of ultra-conservative organizations that represent shady, undemocratic and disingenuous practices, the London-based beverage giant Diageo, which owns brands such as Guinness, Smirnoff, Johnny Walker and others, announced that they will no longer fund the Heartland Institute, a right-wing think tank. General Motors also discontinued their support for the organization earlier this year.

The decision came after the Heartland Institute ran an unsavory billboard ad showing a picture of the Unabomber, Ted Kaczynski, with a caption that read, “I still believe in global warming. Do you?”

In addition to the Unabomber, the Heartland Institute’s ad campaign also compares climate change scientists and advocates to murderers such as Charles Manson and the Cuban dictator Fidel Castro, and the organization believes that "The people who still believe in man-made global warming are mostly on the radical fringe of society," a statement reads. "This is why the most prominent advocates of global warming aren’t scientists. They are murderers, tyrants, and madmen."

The Institute, which receives funding from the Koch Brothers, has also posted an impassioned defense of the American Legislative Exchange Council on their blog: “The Heartland Institute stands with ALEC in support of free enterprise, limited government, and federalism, and asks that you do so as well.” Apparently, this includes a blatantly disingenuous and hateful ad campaign that calls those who oppose their pro-oil, pro Koch-brothers agenda, even scientists, “murderers” and “tyrants.”

While Diageo should be commended for severing ties with the Heartland Institute, the corporation unfortunately has not joined a number of other corporations, including The Coca-Cola Company, Pepsi and Kraft Foods, who have severed their ties with ALEC.