associated press vs. fairey
Mr. Fairey, who sued The Associated Press in 2009 as it began to accuse him of copyright infringement for using one of its photographs as the basis for the poster, said that he did not appropriate any copyrightable material and that his use of the photograph, which showed Mr. Obama looking up pensively, constituted fair use under copyright law. Shepard Fairey received 300 hours of community service and 2 years of probation.
http://www.nytimes.com/2011/01/13/arts/design/13fairey.html?_r=0