My favorite political song "Song of Choice" by Peggy Seeger. Lyrics Here
http://www.dickalba.demon.co.uk/songs/texts/songchoi.htm
It sounds as though it's based on the quote Roger made into a song.

No, I don't think everyone has to be a crusader for every worthy cause. Crusaders inspire change. The people who keep to themselves, yet quietly live their beliefs, make change possible.

Kat, I agree about the mountain/molehill thing.