The American Humanist Association (AHA) is a non-profit organization based on the philosophy of Humanism. The AHA's bi-monthly magazine is called The Humanist. In November 2008, the organization drew criticism from Christian groups over a holiday ad campaign proclaiming, "Why believe in a god? Just be good for goodness' sake".The Associated Press: God, humbug: Humanist holiday ads say just be good (November 11, 2008)

In November 2008, the AHA spent $40,000 on a controversial holiday ad campaign. According to a spokesperson for the group, the ad campaign is geared towards reaching out to people who are atheist or agnostic and "other non-theists who feel a little alone during the holidays because of its association with traditional religion." The Associated Press: God, humbug: Humanist holiday ads say just be good (November 11, 2008)

The ads, some of which will be featured on Washington, DC, buses, say "Why believe in a god? Just be good for goodness' sake."The Associated Press: God, humbug: Humanist holiday ads say just be good (November 11, 2008)