This revolutionary socialism became the dominant revolutionary faith of the twentieth century, which blazed out in the form of communism and still survives. It disdained Western liberalism and even most of the earlier forms of revolution. It was adamant that its science-and-economics-savvy revolution had shed all traces of utopian sentimentalism and could now fulfill the disappointed hopes of 1789 and 1848. It was the hardline Marxism, established by Vladimir Lenin in Russia in 1917 and Mao Zedong