Firas Alkhateeb, an American citizen of Palestinian origin designed and uploaded the Obama "joker" poster on Flickr in January 2009. Described by 'The Guardian' as "America's first successful use of street art", the poster has been a symbol for anti-Obama protests. Following media coverage, Flickr deleted all the available digital posters and the forums discussing it. This action was met by severe backlash which caused Flickr to change their Copyright Infringement Policy. As a result of Flickr removing the image, some online communities viewed Alkhateeb as the most visible representative of free speech on the internet in August 2009.
Details of the poster controversy are available at http://en.wikipedia.org/wiki/Barack_Obama_%22Joker%22_poster.