28 celebrities who made a difference -- and may make you cry (Photos)

Slideshow posted in Photos | Thursday, September 05, 2013

8 of 28: Demi Lovato traveled to Africa in August 2013, just before her 21st birthday, to do some charity work for the Canadian youth group Free the Children. On Aug. 24, she tweeted: 'This baby boy named Iain broke my heart when I had to say goodbye.. He kept running after me while saying 'Bye Demi.' ( Photo / twitter.com/ddlovato/status/371388174414528512/photo/1/large / pic.twitter.com/Ul902kpRJ3)

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