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Hollywood stars use their profiles to improve the world

Angelina Jolie, special envoy for the UN's human rights agency, is urging the international community to step up funding after visiting a refugee camp in Iraq on Sunday. Jolie, along with Leonardo DiCaprio, Emma Watson, Katy Perry and others are on a long list of celebrities who use their high profiles to help the lives of those less fortunate.

How Angelina Jolie, Leonardo DiCaprio, Katy Perry and others help the lives of those less fortunate

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