It’s been a long time since I visited SF; has it been removed, has graffiti been added?

Product Description
With 600 stunning photographs, this comprehensive book showcases more than three decades of street art in San Francisco’s legendary Mission District. Beginning in the early 1970s, a provocative street-art movement combining elements of Mexican mural painting, surrealism, pop art, urban punk, eco-warrior, cartoon, and graffiti has flourished in this dynamic, multicultural community.
Rigo, Las Mujeres Muralistas, Gronk, Barry McGee (Twist), R. Crumb, Spain Rodriguez, the Billboard Liberation Front, Swoon, Sam Flores, Neckface, Shepard Fairey, Juana Alicia, Os Gemeos, Reminesce, and Andrew Schoultz are among the many artists who have made the streets of the Mission their public gallery. Essays and commentaries by insiders involved with the movement document the artistic, social, and political forces that have shaped Mission Muralismo.
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Street Art San Francisco: Mission Muralismo