As much as I would like to believe that music could actually change anything, much less the world, I can't.
And, though I am not a fan, I think Neil Young said it best last year with the following statement:
“The time when music could change the world is past,” he said. “I think it would be very naive to think that in this day and age. The world today is a different place, and that it’s time for science and physics and spirituality to make a difference in this world and to try to save the planet.” Neil Young at the Berlin Film Festival 2008.
Music can't change the world, but
people can. Although musicians couldn't possibly do any worse than our current and past politicians.