- Universities have debated putting warning labels on violent, abusive scenes in literature
- David Perry: It should not be necessary to have a new policy of warning labels
- Good teachers should prepare their students in the course of regular teaching, he says
- Perry: For students with PTSD, the normal precautions should be taken
(CNN)In the Roman poet Ovid's "Metamorphoses," one of the great works of Western literature, King Tereus of Thrace rapes his wife's sister, Philomena, then cuts out her tongue.