You seem to conveniently omit the fact that the first victims in Odessa on 2 May were on the Maidan side, 2 activists, Andrei Biryukov and Igor Ivanov. And that victims of the burning themselves were armed with incendiary weapons: https://youtu.be/FWBGM9G4kF8
As for DNR and LNR, it's as meaningful as saying that Russia is saving people in Ukraine from being burned alive by Ukrainian nationalists [0].
[0] https://en.wikipedia.org/wiki/2014_Odesa_clashes#Trade_Union...