Many people are wondering how Zohran Mamdani, a 33-year-old socialist Muslim who wants to defund the police, globalize the intifada, and destroy capitalism, has emerged as the Democratic Party's nominee for New York City mayor, with leaders like former President Bill Clinton fawning over him. To understand Mamdani’s political ascent, you have to trace the red-green-blue spider’s web that brought him here. This isn’t a complete map — I've written a book, "Woke Army: The Red-Green Alliance That Is Undermining America’s Freedom," to document that story — but it is a snapshot of key turning points over two decades of...