Emmanuel Macron’s centrist grouping was fighting for survival this weekend before the first round of France’s high-stakes snap election, which could see the far-right National Rally (RN) become the biggest force in parliament. Macron, who warned last week that France risked “civil war” if Marine Le Pen’s anti-immigration RN, or the leftwing New Popular Front coalition, came to power, said at the European summit in Brussels that “uninhibited racism and antisemitism” had been unleashed in France. But his strategy of stoking a climate of fear, in which his centrists are presented as the only rational force to hold back the...