WHAT DOES THE WORK OF PHILIP GUSTON have to tell us about racism in the United States? And, for that matter, who is the us the work is speaking to? These questions are, of course, inspired by the postponement of a major retrospective of the artist’s work because of concerns that a group of paintings depicting members of the Ku Klux Klan might be misperceived in the current political climate, one marked by the conspicuousness of white-supremacist ideology and an art world highly attuned to the spectacularization of Black suffering.