Americans used to agree that a fact was a fact. Then came Kellyanne Conway and the president she served and suddenly there were “alternative facts.” Those two words add up to an oxymoron. Even before that we saw attempts to dismiss facts. Think of the mass shooting of children at Sandy Hook and the conspiracy monger Alex Jones who insisted it didn’t happen. There’s also distortion by omission, such as the current White House attempts to cut certain strains of American history from the syllabus. And then, in a category all its own, there are the Holocaust deniers. This exhibition at New York Historical, which travels from the Jewish Museum Berlin, presents a special audio installation that offers selections from Claude Lanzmann’s archive of interviews, recently uncovered. These are the tapes that figured in his groundbreaking documentary of the Holocaust, Shoah. They are part of The Lanzmann Collection, and in 2023, UNESCO made these haunting voices part of the world’s cultural heritage. —Laura Jacobs