Initially when confronted by the war crimes Russia was committing in Bucha, I was reminded of stories of the Katyn Forest massacre in WWII, murders of Polish cadets to undermine the future leadership of Poland. But with the increase in attacks on civilian populations that have no military value, I'm reminded more of the Japanese behavior in WWII...an officer enforced brutality to keep troops in line and also encourage ruthlessness on both sides so no one can expect mercy. Maybe the point is to enrage Ukrainians to shoot prisoners on sight and keep Russia's low morale conscripts from surrendering. Or maybe they really are just orcs.
I don't have any answers, I guess I'm just trying to understand this pointless sadism that doesn't assist in any military goals. Hollywood can't write bad guys this horrible.