Yeah, the imagery is bit on the brutal side, though there's a more of a, well, call it an intellectual meaning to the lyrics. The backdrop to the whole story line is that something somehow went wrong with the world, though no one really knows what anymore; this piece does what you might call setting the stage by presenting the trends that ultimately made it possible to happen.
Like the part you mentioned - a coroner's report on the cause of death of humanity; willfully bludgeoning itself to kingdom come, the final violent impact of dull and blunt minds with too much power.

Anyway, thanks for the comment!

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