It's said that when Norman Rockwell painted Richard Nixon's presidential portrait in 1968, he found Nixon's appearance so shifty, he decided that no portrayal of the president could do his cagey mug justice. In the end, Rockwell painted a generous portrait, figuring that it's better to be mistaken and flattering than just plain wrong.
The benefit of the doubt worked for Nixon -- he hadn't yet served his second presidential term, so ambiguity was perhaps appropriate. If a leader's record proves poor, however, there are ways for an artist to convey his disapproval of his subject. But rarely will an artist take a portrait as an opportunity to show someone literally getting screwed.
That's what portrait artist Jonathan Yeo has done for George W. Bush. Unveiled in August at the Lazarides Gallery in London, Yeo's unofficial presidential portrait is a photomontage of images snipped from pornographic magazines.