Shoppers enter the Hyper Cacher in the 20th arrondissement of Paris, Jan. 7, 2019. Photo: Stephen Caillet / Reuters. Jewish community leaders and French officials gathered on Sunday to mark the seventh anniversary of a terrorist attack on a kosher supermarket in Paris, paying tribute and expressing solidarity against antisemitic violence. Organized by the Representative Council of French Jewish Institutions (CRIF), the main communal body of French Jewry, the ceremony took place in front of the Hyper Cacher where an Islamist gunman shot dead four Jewish hostages on Jan. 9, 2015 — Yohan Cohen, 20; Yoav Hattab, 21; Philippe Braham,...