One aspect of screening which is not often discussed is our responsibility to the public. We owe people a duty of care in what we put into the public domain.
We obviously wish to document the significance of an aircraft accident, however we must balance that against showing respect to the friends and families of the poor people who were involved, and may have lost their lives at the scene.
We (screeners) apply a judgement when reviewing images of accidents. Images depicting a distant, less "personal" perspective have always been acceptable and are an important record of an historically-significant event.
Images showing too much detail, looking too close into the cabin, showing the seats where people were sat, etc are not acceptable, for the reasons described above.
We recently removed an image from the database for this reason. This message is intended simply as some kind of formal notice so that we all know the ground-rules.