Marxism/Leninism depends on the theory of evolution. Karl Marx made it very clear that Charles Darwin’s Origin of Species contained the scientific basis for his views on the class struggle. Some even defined Marxism as "Darwinism applied to human society." Just as the theory of evolution explained how man arrived on the scene from a molecule, so the theory also explained how society evolves. The major trouble with Darwin, from the Marxist perspective, is Darwin’s slow, gradual process of natural selection. Marxist dialectical materialism called for something more than just gradual progression. The dialectic needs a theory with clashes (thesis...