That too many people have died?'
are very clear anti-war messages and Dylan's saying that people still don't realize that war is pointless.
Additionally, the line about the mountain washing to the see shows that nothing
lasts forever,[and] the line about people not being free shows that there is
too much oppression in the world. He also talks about people turning their
heads and pretending they do not see the trouble in the world. Dylan is saying
that the answer to all these questions is right in front of us, yet we do not
see it."
http://www.songmeanings.net/songs/view/1093/
Finally, according to ANSWERS.COM , Dylan probably always had two ways to read the song in mind when he wrote it back in 1962 (the year I was born).
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