College professors and administrators use “trigger warnings” to warn students about material that may upset them, such as depictions of rape and violence. The American public has had some version of these warnings for decades, most recognizably as movie or video game ratings.
But in recent years, students have been receiving trigger warnings on a new range of material, including classical literature such as Ovid’s “Metamorphoses” because of a passage about the Greek goddess Persephone’s rape.
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