Why don't people say celebrities should stay out of politics when someone like Charlton Heston says some really stupid shit like America has so much gun violence because of its "ethnic diversity".
I don't know of anything Brad and Angelina have done that should offend anyone. I think sometimes we get so sick of the pop media's obsession with them that we lump them in with Britney, Lindsay et al.
Its not their fault the media has its head so far up their asses.
    I don't know anything about the Bjork in China thing other than what I read on this thread, but maybe she went to China expressly so she could sing an "unapproved" song about independence and reference Tibet.