Marxism
Some Marxists say that modern "communism" is not communism at all. They say that "communist" countries like the Soviet Union, the People's Republic of China, Cuba, and Vietnam are really using different forms of capitalism, often with heavily "nationalized" industries. A thinker named Tony Cliff was one of the biggest supporters of these ideas. He wrote that states like the Soviet Union and Communist China (before 1980) were "State-Capitalist."