This Poem by Woody Harrelson is Probably a Good Place to Start...
Tenzin Gyatso , His Holiness The Fourteenth Dalai Lama..
..
Serj Tankain..
Tom Morello..
Zack De La Rocha..
Micheal Moore..
Amy Goodman..
Mumia Abu-Jamal..
Juan Gonzales..
Wangari Maathai..
Brandon Boyd ..
Arundhati Roy..
Noam Chomsky..
Thich Nhat Hanh..
Otep Shamaya..
Lauryn Hill..
Leanord Peltier..
Cornell West..
and there's probably a few I'm Forgetting...