Peace Will Come (According to Plan) Lyrics

Lyric discussion by BrewsterKahle 

Cover art for Peace Will Come (According to Plan) lyrics by Melanie Safka

Does this song warrant a darker interpretation?

(seems to be "buy one" not "be one" based on listening to https://www.youtube.com/watch?v=Wv4DW-k7lRM and https://archive.org/details/lp_melanie-at-carnegie-hall_melanie )

There is repeated references to "man" and not just as in "humankind": According to plan, according to man but then: And the world becomes a man

and And my hands are playing the sand later becomes: And our hands are clutching the sand

and Will our blood become a part of the river

in her intro in her 1973 performance of "Beautiful People" she refers to her more innocent past, 10 years before. https://archive.org/details/lp_melanie-at-carnegie-hall_melanie/disc2/03.02.+Beautiful+People.mp3

so is this a turn toward darkness through the song, and hence the cynical interpretation of "buy one" turning on the Peace call.