Lyrics here:
http://www.sing365.com/music/lyric.nsf/ ... 8D00349C45
I don't personally see any particular meaning in it though. Fair song, but meaningless as far as I'm concerned. Until they themselves (Metallica), explain them, it's meaningless to me. I am one who does not buy explanations like, "It's open to interpretation." That, IMHO, is a cop out explanation that relieves the writer from any and all responsibility for meaningful lyrics.
There are some fan explanations here, but they are all over the place. I've not yet found any explanation from the band.
Without their explanation, it's meaningless to me, and I won't assign my own meaning to it. That's just the way I am.
EDIT: See if this video works for you:
http://www.mojvideo.com/video-metallica ... 80a57b0be2
EDIT2: It's meaningless, but I like it. Not one of their best, but it's okay.
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I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...