Photos of dead people means nothing if we don't know who killed them. The propaganda says it was Russian soldiers, and that may be true, but they might also have been killed by other people for other reasons; perhaps because they were collaborators with the Russians, but at this stage we don't know the facts.
Unless photographic evidence of a Russian soldier shooting them emerges, it's not a foregone conclusion.
The above does not make me a Putin apologist, and any personal attack on me will be reported.