In the most awful cases, I'm not convinced that actually seeing pictures of bits of body is any more effective in a safety education sense than reading/being told what happened.
Some of the worst photographs I've ever seen were of the remains of a young girl killed doing her first parachute jump on a weekend course - I represented her family. The poor girl drifted away from the LZ, was unable to steer back, and descended straight into the blades of a hovering helicopter. It doesn't take much imagination to work out what the photographs looked like, does it?
Is it really necessary to see the photographs of what remained of her to learn the safety lesson: Parachuting and turning blades are a potentially lethal combination - especially if novices are jumping?
Do we need to see the photographs of what remained of the child that poor father instinctively lifted when leaving a helicopter with the blades still turning in order to learn the safety lessons of that incident?
Doesn't this case fall into the same category?
Let's just get on with learning how such a thing could happen - and the importance of avoiding the potential danger.