Exhibitions in Berlin these days like to flirt with urban planning and architecture, and a kind of neo-Situationism has emerged from this, which at its worst has led to service-and-spectacle events like the Berlin Biennale. On the other hand, the 1998 show “Baustop.randstadt,-” (at Berlin’s Neue Gesellschaft für Bildende Kunst) made clear how far the critical potential of action alliances and leftist groupings has come from what has been called “new genre public art,” art in public spaces intended as a means of effecting social change. Today, it’s not only about instituting an artistic model as