Actually, it was the Ukrainians, supported in part by the Nazi Azov battalion, that committed atrocities against the ethnic Russians in the Donbask.
Crimes were committed by both sides on a limited scale. The Russians were no less guilty than the Ukrainians. But they should not be exaggerated into some sort of attempt at ethnic cleansing. Additionally, they do not compare to the massive destruction that Russia has committed in the last year. The Russians have destroyed whole cities and killed thousands of civilians. But you would ignore this because of the actions of a handful thugs, thugs that operated on both sides?