“The Daily Show with Jon Stewart” defined an era. For more than sixteen years, Stewart and his many correspondents skewered American politics. At the 2021 New Yorker Festival, Stewart spoke with David Remnick about his new show, “The Problem with Jon Stewart”; the potential return of Donald Trump to the White House; and the controversy around cancel culture in comedy. “What do we do for a living?” Stewart asks, of comedians. “We criticize, we postulate, we opine, we make jokes, and now other people are having their say. And that’s not cancel culture, that’s relentlessness.”