Variants of communism have been developed throughout history, including anarchist communism, Marxist schools of thought, and religious communism, among others. Communism encompasses a variety of schools of thought, which broadly include Marxism, Leninism, and libertarian communism, as well as the political ideologies grouped around those. All of these different ideologies generally share the analysis that the current order of society stems from capitalism, its economic system, and mode of production, that in this system there are two major social classes, that the relationship between these two classes is exploitative, and that this situation can only ultimately be resolved through a social revolution. The two classes are the proletariat, who make up the majority of the population within society and must sell their labor power to survive, and the bourgeoisie, a small minority that derives profit from employing the working class through private ownership of the means of production. According to this analysis, a communist revolution would put the working class in power, and in turn establish common ownership of property, the primary element in the transformation of society towards a communist mode of production.
Communism in its modern form grew out of the socialist movement in 19th-century Europe that argued capitalism caused the misery of urban factory workers. In the 20th century, several ostensibly Communist governments espousing Marxism–Leninism and its variants came into power, first in the Soviet Union with the Russian Revolution of 1917, and then in portions of Eastern Europe, Asia, and a few other regions after World War II. As one of the many types of socialism, communism became the dominant political tendency, along with social democracy, within the international socialist movement by the early 1920s. (Full article...)
Marx defined history on a strictly economic basis, stating that history had 6 steps (Tribe, Slavery, Feudalism, Capitalism, Socialism and Communism), where economic inequility caused each step to be replaced over time. He as a communist believed that a violent revolution would be the catalyst in the transformation from capitalism to socialism. Since its inception and up to the present day, Marxism has been situated largely outside the political mainstream, although it has played a major role in history. Today, Marxist political parties of widely different sizes survive in most countries around the world.
...that Moscow City Hall, built in the 1890s to the tastes of the Russian bourgeoisie, was converted by Communists into the Central Lenin Museum after its rich interior decoration had been plastered over.