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Art-O-Matic, the event housed adjacent to the Green Line’s Waterfront Metro station, tells artists it has a “display at your own risk” policy. There’s reason for that, local artist Anita Walsh discovered after the Oct. 31 opening night: Her work For Louise failed to survive the reception. The piece was a brightly colored crayon design on the floor and walls commemorating the efforts of housekeepers. Revelers apparently plucked crayons, mounted in scrub brushes, out of the piece and used them to write graffiti on the walls. “It was a sensitive piece, meant to honor the ritual of housecleaning, which made the destruction that much more ironic,” Walsh says. In response, on Nov. 6, she painted over the remains of her original work with royal-blue paint and left a poem rebuking the vandals, which ended, “You defaced her work and broke your house./She will not clean your house again.” —Mary Guiden