Russians are executing civilians? Or is this propaganda?

I’m on Ukraine’s side but I’m hesitant to believe this. They said Ukrainians buried 300 bodies that were shot in back of the head.
Russians are executing civilians? Or is this propaganda?
Horrible Russians
It’s propaganda!
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Looks like it’s true. More news agencies are reporting up to 400 civilians dead.
Russians are executing civilians? Or is this propaganda?
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