Revdrdark, wrong! The lyricsc printed are correct, its not marked men. G. N. Wrote a sci fi book (never released) when he was a teenager, where in a dark work, there were Machmen, that were (evil?) dark law-keeping robots. And its 5 not fire. You really should do you research when writing on sites.
And the meaning of the song: read it: its one mans image of a dark picture of what a future could be like.