In both Islam and communism, there is an “In” crowd and an “Out” crowd, and both ideologies have as their relentless goal destroying the “Out” crowd. In revealing the commonalities of the Reds and the Greens in the Red-Green Axis, we have elucidated their shared goals of violence, wealth redistribution, and inequality before the law. Here we explore their binary worldview. Both Islamic political systems, as developed in classical jurisprudence, and Marxist-Leninist communism organize the world into a permanent binary division. One domain is the legitimate, correctly ordered sphere; the other is the external sphere that remains incomplete, illegitimate, or...