"I'm an organizer for immigrants rights in Los Angeles, but I went along with some friends to the Repeal Prop 8 march in L.A. when it was denied not to long ago. This is popular in Frosted Flakes commercials and well known through the movie Remember The Titans which made it easier for people to learn:

Leader/Group

Everywhere we go!/ Everywhere we go!
People wanna know!/ People wanna know!
Who we are!/ Who we are!
So we tell them!/ So we tell them
We are the People!/ We are the People
The mighty, mighty People!/ The mighty, mighty People!
Fighting for Jus-tice!/ Fighting for Jus-tice!
and e-qua-li-ty!/ and e-qua-li-ty!

REPEAT

The words are easy to change too. For example: The last line could be And the living wage! if you're fighting for better wages. Change things around, this chant is bound to help you guys organize your People.

Good luck"