From Chapter Two of Article 1 of the Russian Soviet Federative Socialist Republic (1917):
"3. Bearing in mind as its fundamental problem the abolition of the exploitation of men by men, the entire abolition of the division of the people into classes, the suppression of exploiters, the establishment of a socialist society, and the victory of socialism in all lands, the Third All-Russian Congress of Soviets of Workers', Soldiers', and Peasants' Deputies further resolves:
(a) For the purpose of attaining the socialization of land, all private property in land is abolished, and the entire land is declared to be national property and is to be apportioned among agriculturists without compensation of the former owners, to the measure of each one's ability to till it."
. . . (the remaining subparagraphs addressed all other resources including factories, mills, mines etc., etc., etc. would now be national property.
From Chapter One, Article 1 of the Constitution of the Union of Soviet Socialist Republics (1936):
"The Union of Soviet Socialist Republics is a socialist state of workers and peasants."
From Chapter One of the Constitution of the Union of Soviet Socialist Republics (1977):
"The Union of Soviet Socialist Republics is a socialist state of the whole people, expressing the will and interests of the workers, peasants, and intelligentsia, the working people of all the nations and nationalities of the country."
Hmm, . . . at least they were consistent about the political/economic nature of their society: socialism.