I've seen pics of the bodies and the bodies are already decomposing.
With some of the people on this site, it won't matter how overwhelming the evidence is. They would continue to deny it was happening up until they witnessed it with their own eyes.
Reading some of the posts here sheds light on the mentality of the villagers outside of the concentration camps were completely oblivious to what was going on down the street.
Bodies in the mutilated bodies in the HQ of the FSB and army staff, mass graves, decomposing corpses in the street, the family of the Mayor all buried together, captured videos, dozens of survivor accounts, pictures from Russian soldiers own recordings... the list goes on. No evidence will be enough, but its ok. Theirs and Moscow's disbelief doesn't matter outside of a small circle.
The story does help distract from the abysmally poor performance of the Russian Military in their rout out of the North. So there's a plus for Putin there.