Russia had its own domestic slaves, the peasants. They were not allowed to leave their land and could pretty much be legally killed at any time by the nobility. As a result, there were pretty much NO Africans in Russia up through World War II. After the war, with the spread of international communism, the Patrice Lumumba International Friendship University was founded and hosted a number of African students, but the numbers were still small.

As a result, Africans are still the object of race-based attacks (though they suffer perhaps less than people who live in greater numbers in Russia such as Azeris, Tajiks and Uzbeks). Civil Rights? Seriously? You even asked?

EDIT: I looked up the numbers. Blacks are estimated at a maximum of around 100,000 people in Russia total, or less than one tenth of a percent of the population.