Once they had blown up a Russian soldier transport, the chechens would go and pick at the dead bodies and hold up parts on a stick. I saw it often on Kavkaz.
It is in fact the chechen culture which promotes violence and killing. The stories they read to their young children are loaded with things like impalings, etc.
A poster said he had a video of a oh maybe 5 month old infant being disemboweled in front of the Russian mother. The incredible responses from many on the list were to inquire how they could purchase a copy of that video.