Sergio Luzzatto

Sergio Luzzatto is not directly mentioned in either of the provided news articles. The articles discuss books about the rise of Hitler and the origins of antisemitic populism, focusing on figures like Johann Chapoutot and a French aristocrat considered a pioneer of antisemitism. There is no information available in these articles to determine who Sergio Luzzatto is, why they might be newsworthy, or any recent events related to them. Therefore, it's impossible to provide a summary about Sergio Luzzatto based solely on the given context.