The campaign poster is typically more science than art. The final product, after rigorous vetting by focus groups and campaign bureaucrats, may send a clear political message, but it's rarely worth hanging on your wall—let alone at the MoMA. But there are some striking exceptions, most of them from just a few campaigns. Amid the Vietnam War, the battle for civil rights, and the waves of student rebellion, the 1968 anti-war candidate Eugene McCarthy (not to be confused with the anti-Communist GOP Sen.