Joan Baez–We Shall Overcome

Marvin Gay–What’s Going On?

Black Eyed Peas–Where is the Love

John Mayer–Waiting on the World to Change

Bruce Springsteen–Streets of Philadelphia

Katy Perry–Roar

Lady Gaga– Born this Way

John Lennon–Imagine

Sting–We Work the Black Seam

Sting as a Protest Song writer