A building in the Alesia district of Paris whose facade is covered with Stars of David. Photograph: Geoffroy van der Hasselt/AFP via Getty Images French prosecutors are investigating whether a foreign intermediary was behind the painting of more than 200 blue Stars of David on buildings in and around Paris last month amid a surge of anti-Semitic acts in Europe since the start of the Israel-Hamas war. Investigators suspect that a man and a woman caught on surveillance footage painting some of the graffiti had communicated in Russian with a person who offered them money to spray the stars on...