Quoted: Street art comes indoors, to the Smithsonian, no less. Will anyone call the police?

On Tuesday, as Barack Obama was being sworn into office, his portrait by the street artist Shepard Fairey — reproduced endlessly during the campaign until it became the defining image of the future president (it towered over a stage at one of the inaugural balls) — was on view at the National Portrait Gallery. A collaged poster of it had just entered the collection along with portraits by artists like Gilbert Stuart (George Washington), Norman Rockwell (Richard Nixon) and Elaine de Kooning (John Kennedy).