"Racism had grown out of slavery and exploitation and was very hard to eradicate quickly and completely."

Next Quote

In socialist society certain inequalities in property still exist. But in socialist society there is no longer unemployment, no exploitation, no oppression of nationalities. In socialist society everyone is obliged to work, although he does not, in return for his labour receive according to his requirements, but according to the quantity and quality of the work he has performed.

— J. Stalin