I can't go without mentioning "The Times They Are A-Changin'" by Dylan. It is an ongoing anthem. Also, a few choice favorites:
"A Change is Gonna Come" by Sam Cooke
"Your Song" by Elton John
"Walk Away Renee"by Left Banke
"Whenever You're Ready' by the Zombies
"A Change is Gonna Come" by Sam Cooke
"Your Song" by Elton John
"Walk Away Renee"by Left Banke
"Whenever You're Ready' by the Zombies