The Marx-Muhammad Pact (referring to Karl Marx and Muhammad), also known as the Leftist-Islamist Alliance, the Marxist-Islamist Alliance or the Red-black Alliance, is a political neologism that refers to the purported phenomena of cooperation and mutual support between some Western left-wing (in particular the far left) and radical Islamist groups which has emerged in predominantly Europe since the September 11, 2001 attacks and the start of the "War on Terrorism".
The term "Marx-Muhammad Pact" was coined by William S. Lind, Director of the Center for Cultural Conservatism at the Free Congress Foundation. In an article in the aftermath of the 7 July 2005 London bombings, which were carried out by Islamic terrorists, Lind writes:
Iranian-born journalist Amir Taheri has written:
:"The European Marxist-Islamist coalition does not offer a coherent political platform. Its ideology is built around three themes: hatred of the United States, the dream of wiping Israel off the map, and the hoped-for collapse of the global economic system. Europe's hard Left sees Muslims as the new under-class in the continent".