Nonsense. Russians dominate parts of Ukraine which were parts of Russia before it’s annexing into Ukrainian SSR by the Soviets.
As for Holodomor it is falsely presented by Ukrainian nationalists as a Russian genocide against Ukrainians. Famine was a result of Stalin’s effort to ruin rural communities and herd people into cities. All the peoples of Soviet Union has suffered, mostly Russians. In case of Ukraine it was Communist Ukrainians who killed non-communist Ukrainians.