His victory was a striking actualization of the “red-green alliance," a pairing of Marxist revolutionaries with Muslim Brotherhood and Islamist activists. It’s an alliance that has been at the forefront of the anti-Israel, pro-Hamas demonstrations on America’s streets and college campuses since the horrific October 7, 2023 terror attack.
https://canarymission.org/blog/Mamdani_And_The_Redgreen_Alliance