Why do false statements and long-disproven theories, flourish? Why a majority of Republican voters in the US believe that Barack Obama was not born in Hawaii but abroad, probably in Kenia? Psychological and political reasons for believing obvious lies are interesting to explore and reveal much about the functioning of communication in an Information Society. The case of "birthers" show the inner tensions and complex workings of American democracy.
Keywords: Campagna elettorale, blog, verità, Barack Obama, democrazia americana, "birthers"