Is there any evidence or report of a genocide in the Donbass region?

In his address before the "special military operation" in Ukraine began, Vladimir Putin stated that

In this context, in accordance with Article 51 (Chapter VII) of the UN Charter, with permission of Russia’s Federation Council, and in execution of the treaties of friendship and mutual assistance with the Donetsk People’s Republic and the Lugansk People’s Republic, ratified by the Federal Assembly on February 22, I made a decision to carry out a special military operation.

The purpose of this operation is to protect people who, for eight years now, have been facing humiliation and genocide perpetrated by the Kiev regime. To this end, we will seek to demilitarise and denazify Ukraine, as well as bring to trial those who perpetrated numerous bloody crimes against civilians, including against citizens of the Russian Federation.

With regard to the point about genocide, and Russia's claims at the UNSC of genocide have there been any documented reports of Ukraine being the aggressor in the conflict in the Donbas region or committing a genocide?

Moreover, according to a Russian news agency report, Denis Pushilin, the head of the self-proclaimed DPR republic stated

"On the territory of the Donetsk People’s Republic alone, more than 130 mass graves of the victims of the Ukrainian aggression were found and opened," he said. "They are mass graves of civilians that were killed during operations by Ukraine’s armed forces in the DPR in Snezhnoye, Debaltsevo, Khartsyzsk and Ilovaisk."

Have these reports of mass graves been independently verified? I see that Russia did say that they would hand over evidence here (but is again a Russian news agency), but can't see any reports of evidence being transferred.