subvertising

thumb|Two billboards with the same original content; the billboard on the right is an example of subvertising after being vandalized. thumb|The ExxonMobil logo as subverted by [[Greenpeace.]]

Subvertising (a portmanteau of subvert and advertising) is the practice of making spoofs or parodies of corporate and political advertisements. The cultural critic Mark Dery coined the term in 1991. Subvertisements are anti-ads that deflect advertising's attempts to turn the people's attention in a given direction. According to author Naomi Klein, subvertising offers a way of speaking back to advertising, ‘forcing a dialogue where before there was only a declaration.’ They may take the form of a new image or an alteration to an existing image or icon, often in a satirical manner.