Former New York City Mayor Rudy Giuliani has sharply criticized Zohran Mamdani, the newly victorious Democratic socialist candidate in the city's Democratic mayoral primary. Giuliani described Mamdani as an "enemy of America" and warned that if Mamdani were to become mayor, "the city is gone." He further characterized Mamdani's rise as a disaster for the Democratic Party, which he claimed has been "taken over by Karl Marx." Giuliani contrasted Mamdani with current Mayor Eric Adams, stating that Adams, despite any flaws, is not a communist, while Mamdani represents a combination of what he called an "Islamic extremist and a communist." The discourse around Mamdani’s candidacy highlights concerns about his radical leftist policies, including ideas about government housing and possession of private property. Meanwhile, financial news outlet Breakingviews noted that Mamdani is putting a radical spin on traditional political ideas as he seeks to become New York City's mayor.