The Hand of Man by country joe and the fish, album: C.J. Fish, 1970

It's many an hour I've been thinking of our fate
Doomed it seemed to live in a world of fear and hate.
I thought about the good and the love there could be,
How fear can blind a man, how people are not free.

Hey, take my hand and come walk with me,
Brothers and sisters we all can be
From a spark in the dark from the hand of man
Peace and understanding spread through our land.

I gazed into the sky and saw the rains come down
I saw the deadly poisons flowing to the ground.
The rivers and the oceans turned into a grave
All years of effort wasted there was nothing left to save.

Hey, take my hand and come walk with me,
Brothers and sisters we all can be;
From a spark in the dark from the hand of man
Peace and understanding spread through our land.

An awareness about the future of mankind and our ignorance, not only about environment and its pollution, but also about ourselves who live in fear and insecurity, isolated with no bonds of solidarity and compassion.
You can hear some songs by Country Joe and the Fish in You tube

http://www.youtube.com/watch?v=s5btZWbViPA
http://www.youtube.com/watch?v=JuTyDzS5awA
http://www.youtube.com/watch?v=mlW3iP11fH4