Extreme socialism is now on the march in America, with the demonisation of Israel as the principal weapon in its arsenal. Claire Valdez, Brad Lander and Darializa Avila Chevalier, three extremists backed by New York Mayor Zohran Mamdani, emerged victorious this week from their Democratic primaries in New York City’s 7th, 10th and 17th congressional districts. Valdez and Chevalier are affiliated with the ultra-left, anti-American Democratic Socialists of America.