They reached a top flight, puffing for breath. They walked down a chilly hall with bare, graffiti-tagged walls. The graffiti was very subversive, neatly stenciled, highly politicized. Much of it was in English. TO BUY A NEW CAR WOULD MAKE YOU SEXUALLY ATTRACTIVE, insinuated one graffito. CONSUME MORE RESOURCES TO GRATIFY SHORT-TERM DESIRES, another suggested darkly.