The billionaire investor Bill Ackman, who helped oust Claudine Gay as Harvard president in a scandal over alleged plagiarism and campus antisemitism, is reportedly “completely losing it” over stories in which Business Insider said his wife, the academic Neri Oxman, “plagiarised some passages” in her own dissertation. So said Adib Sisani, communications director for Axel Springer, the German company that owns Insider, in comments to the news website Puck. Responding to Ackman’s claim that the Insider stories about Oxman were motivated by antisemitism, Sisani said: “That’s a very hard red line. Those are accusations that we’re going to make triple-sure...