(Srila Prabhupada in Moscow, 1971)
"At present, human society is specifically cultivating the mode of ignorance (tamo-guṇa), although there may also be some symptoms of passion (rajo-guṇa). Full of kāma and lobha, lust and greed, the entire population of the world consists mostly of śūdras and a few vaiśyas, and gradually it is coming about that there are śūdras only. Communism is a movement of śūdras, and capitalism is meant for vaiśyas. In the fighting between these two factions, the śūdras and vaiśyas, gradually, due to the abominable condition of society, the communists will emerge triumphant, and as soon as this takes place, whatever is left of society will be ruined. The only possible remedy that can counteract the tendency toward communism is the Kṛṣṇa consciousness movement, which can give even communists the real idea of communist society. According to the doctrine of communism, the state should be the proprietor of everything. But the Kṛṣṇa consciousness movement, expanding this same idea, accepts God as the proprietor of everything. People cannot understand this because they have no sense of God, but the Kṛṣṇa consciousness movement can help them to understand God and to understand that everything belongs to God. Since everything is the property of God, and all living entities—not only human beings but even animals, birds, plants and so on—are children of God, everyone has the right to live at the cost of God with God consciousness. This is the sum and substance of the Kṛṣṇa consciousness movement."
(Caitanya-caritāmṛta Ādi 8.20, Purport)