KPCC should have known they were asking for trouble when they put up a giant billboard next door to fellow public radio station KPFK. The press picked up on the story, as did an anonymous graffiti artist, who felt inspired to modify the advertising:
The graffiti has since been removed, and the billboard is back to advertising for KPCC. A photo of the unmolested signage is after the jump.
The red building next door to the billboard is the KPFK headquarters.
Photo by Lalo Alcaraz. More at Pocho.com.