Poland, as the theorist Maria Janion has noted, lies East of the West and West of the East. The cognitive dissonance can sometimes manifest in a complex blend of inferiority complex and messianic pride, often expressed via tales of the nation’s suffering and past glory. The majority of post-1989 efforts to tell the nation’s history have focused on repressing “Eastern” attributes in favor of “Western,” but Russia’s war on Ukraine has seen the nation assert its solidarity with its beleaguered eastern neighbor. Warsaw’s Museum of Modern Art is trapped between the Stalinist Palace of Culture and Science and proliferating skyscrapers, and the institution’s programming reflects the difficulty of reconciling these two influences. Its temporary home, close to the Vistula River, currently hosts “The Dark Arts: Aleksandra Waliszewska and Symbolism from the East and North,” curated by Alison M. Gingeras and Natalia Sielewicz. The reclusive painter has gained an enormous online following for her somber, cryptic gouaches depicting a cast of mysterious figures including woman-spider hybrids, sinister Slavic wraths, lonely hangmen, flayed youngsters, and bleeding mystics. The curators have applied a decorum-defying social media logic to the show’s methodology, juxtaposing works of varying provenances and gravities. Yet the physical center of …