Like time spent staring at roof pigeons, the summer doldrums in New York are good for stocktaking. A recent lunch with an uptown museum curator led to some, as we debated a type of show popular with local institutions since 2008: the historical survey of engagé art (think of White Columns' "Activism, Art, and the AIDS Crisis, 1987-1993"). Afterward, I strolled a few blocks to the Whitney (ground zero for the 1990s culture wars) to visit its latest manifestation, the exhibition "I, YOU, WE"—a roundup of art's responses to the crises of the Reagan and... More >>>