The alt right is now threatening the classics, according to Mark Zuckerberg’s sister. No, the amorphous online movement that is slowly becoming synonymous with white nationalism isn’t a menace to the classical canon because they want schools to stop teaching it — it’s due to their deep interest in reading Homer, Plato and Plutarch. That’s the logic behind Donna Zuckerberg’s recent post on the Eidolon website. Zuckerberg is a classicist who understands her field of study no longer generates as much interest as it did in centuries past. But she’s horrified that people she hates are reviving interest in her favorite subject because the alt right — like pretty much all who studied classics in the past — see Greco-Roman antiquity as the foundation for western civilization. That notion is “a slippery…