Phil Ochs' song "Just One More Link in the Chain" is here in the digtrad. Then there's the song by Kate Wolf "Links in the Chain" which I think was inspired by Phil Ochs' song and also Karen Silkwood.

LINKS IN THE CHAIN — Kate Wolf

She was willing to go ahead
   when other people were afraid
Remembered by the questions that she raised
Does the name Karen Silkwood
   mean anything my friend
She was another link in the chain

Just another link in the chain
   in the chain
Just another link in the chain
It's the truth growing stronger
   and the voices speaking louder
That makes us links in the chain

Who took the children from the mines
   the young women from the mills
When the bosses turned to look the other way
It was the rebel voices
   raised high against the wind
That fought for the rights we have today

Just another link...

It's the questions and the answers
   the knowing and the why
The standing up to the wrong things the we see
And it takes more than one
   before the battle's done
Someone else who's not afraid to be

Just another link in the chain
   in the chain
Just another link in the chain
Down through history
   it's been the same my friend
They've been links in the chain

Alt. first verse:

Willing to go ahead
   when other people were afraid
Remembered by the questions that they raised
Some dead and some in prison
   for the things that they believed
They were links in the chain

Cheers, S. in Seattle