Sean Penn played the Pied Piper of activism at the Coachella Festival on Monday when he set off on a protest trip to New Orleans, Louisiana with buses loaded with event revelers.

The actor/director took the stage at the festival on Sunday to recruit activists for his Dirty Hands Caravan venture. He called on Coachella festival-goers to "take action" and join him on a cross-country bio-diesel bus caravan which began Monday morning.

Speaking just before My Morning Jacket's set on the main stage at Coachella, Penn told music fans, "This is about volunteerism. Revolution is a young man's job and you can be the revolution."

He revealed that singer/songwriter Ben Harper and Everlast would be joining him for the trip to the New Orleans Jazz & Heritage Festival.

The volunteers will help build houses for the homeless, while protesting the Iraq war with Penn.

Penn was hoping to recruit 300 Coachella revelers to join him on the bus tour to New Orleans and back to Los Angeles.

(This news article provided by World Entertainment News Network)