Pablo Picasso “Guernica” / spray paint

(Vandalized by then-artist / current-art-dealer Tony Shafrazi, who in 1974 smuggled a can of red spray paint into MOMA and wrote “KILL LIES ALL” across the painting. Shafrazi was apparently protesting Nixon’s pardon of William Calley, a participant in the My Lai massacre. As police took him into custody, Shafrazi said, “Call the curator. I am an artist.” The spraypaint was non-archival and easily removed.)