Since time immemorial, art and politics have been locked, like the world's most hateful couple, in an awkward embrace: Art subverts political establishments, political establishments ban art, repeat. It's a phenomenon that's especially pronounced in music, which can not only provide an explicit message, but also, at its best, inspire the masses to sing along. And it works: For every political song gone disastrously wrong (i.e., Michael Jackson's "Earth Song," which urges us to consider "the elephants/Have we lost their trust?"), there's one gone earth-shatteringly right ("We... More >>>