Worth a read

"John Lennon vs. Bono: The death of the celebrity activist"

Excerpt:
Is there a celebrity activist today who matches Lennon's impact and appeal? The closest counterpart to Lennon now is U2's Bono, another transcendent musical talent championing another cause: the battle against global poverty. But there is a fundamental difference between Lennon's activism and Bono's, and it underscores the sad evolution of celebrity activism in recent years.

Lennon was a rebel. Bono is not.

Lennon's protests against the war in Vietnam so threatened the U.S. government that he was hounded by the FBI, police and immigration authorities. He was a moral crusader who challenged leaders whom he thought were doing wrong. Bono, by contrast, has become a sort of celebrity policy expert, supporting specific technical solutions to global poverty. He does not challenge power but rather embraces it; he is more likely to appear in photo ops with international political leaders - or to travel through Africa with a Treasury secretary - than he is to call them out in a meaningful way.