I do not think there is a contradiction between a celebrity's intensions and volunteering to serve humanity a large. If Angelina jolie, is doing what she is doing to gain more publicity, or to alter a public persona, that categories her as one of the bad girls of Hollywood. Then so be it. She has been giving so much of her time to help others. I followed her work, ever since she joined UNHCR. The United Nations call for volunteer work and it's resort to celebrities is not tarnished by self interest. If celebrities have a following and they have something to say to there fans, trust me people will alter their views towards something of value. They will think, analyze and know. Additionally, public figures and celebrities , can change policies , can influence governmental decisions and can change legislation and see to it, that it get executed. They are well connected and they become the voice of those who can not speak for themselves.

The question of whether they are doing it for any ulterior motive other than the cause at hand , is not really important ... the fact they are doing it is what matters...