Do you read "Das Kapital" by Marx?
proletarian revolution — In order to overcome the fetters of private property the working class must seize political power internationally through a social revolution and expropriate the capitalist classes AROUND THE WORLD and place the productive capacities of society into collective ownership. Upon this, material foundation classes would be abolished and the material basis for all forms of inequality between humankind would dissolve.
comunist country, yeah! They have described themselves as "socialist", reserving the term "communism" for a future classless society, in which the state would no longer be necessary (on this understanding of communism, "communist state" would be an oxymoron) – for instance, the USSR was the Union of Soviet Socialist Republics. Marxists contend that, historically, THERE HAS NEVER BEEN ANY COMMUNIST COUNTRY. Within the socialist movement, there are a number of criticisms of using the term "communist states". Left communists, Anarchists and some Trotskyists point out the fact that the so-called "communist" or "socialist" states or "people's states" were actually state capitalist and thus cannot be called "socialist".