"If you looked into the face of a mother whose daughter or son has died in their arms for no good reason, they don't know of care who's President of America. It's something that once you're a witness to, you can't get it out of your head."
- Bono, 2009
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The song 'One Tree Hill' is named after the highest volcanic hill in Auckland and was dedicated to Greg Carroll, who had become Bono's personal assistant. Greg Carroll was killed in a motorcycle accident in 1986.