The UN special rapporteur for the Palestinians, Francesca Albanese, last week posted a cartoon denouncing Israel, depicting what appears to be a global spiderweb, its strands draped with cash and weapons, in an image that experts said echoed age-old antisemitic tropes. Albanese’s office said the cartoon was not meant to depict a spiderweb or Israel, and condemned antisemitism. Albanese has a history of antisemitism and extremist rhetoric against Israel, according to her critics. She says she is a champion for Palestinian rights and an opponent of discrimination, including against Jews. The cartoon, posted to Albanese’s 1.2 million followers on Instagram,...