Brucegel,
I have no problem agreeing to disagree. This phenomenon of art being a prime mover, or galvanizing force, behind social change just isn't supported historically. Prior to Woody Guthrie's dust bowl commentaries through song, art and music was created after the fact to record what happened. What you are describing is a phenomenon that has occured only after the advent of the broadcast medium. It is an illusion that the likes of Bob Dylan, Pete Seger, Peter, Paul & Mary, and others somehow pushed society over the top on any one issue.
I'm moved by lyrics that express the human condition. Being moved in such a way has never influenced me to the point of taking to the streets though. I arrive at that point through a process of discovery aided by a sound knowledge of history, absorbtion of scholarly writings and a sense of right and wrong instilled in me by my father.
As a pretty good example of what I speak, consider the founding of this country. The signers of the Declaration of Indepenence arrived at that point through dialogue, historical consideration and an firm knowledge of right and wrong. The U.S. Constitution was written about at great length through the exchange of letters written by the framers of that document. At the Constitutional Convention the participants may have had different views of the purpose and structure of government but they certainly debated the issues to form a concensus; all without benefit of a song.
God Bless America, The Star Spangled Banner and America The Beautiful were all written after the fact. I'm just really trying to argue that most of the people at the time of the civil rights movement and the Vietnam war weren't tuned into the songs that so moved you. They were moved by the printed word and a sense of right and wrong. Our generation wasn't the only generation involved in making these changes and the other folks were getting their motivation from sources other than song.
I would hate to think that a people couldn't make necessary change without aid of three stanza's and a chorus.
Patrick