Excerpt: “The post also praised Elliot Rodger, the 22-year-old who, in 2014, stabbed three men to death in his apartment before embarking on a shooting rampage in Isla Vista, Calif., killing three others and injuring 14 before taking his own life. In a manifesto Mr. Rodger wrote before his death, he expressed resentment about living a celibate, lonely life and his desire to inflict revenge on the women who had rejected him and the men whom they chose, instead of himself, as sexual partners.”
