Over the years, several A-list stars have engaged in political activism.

GeorgeClooney-WhiteHouse-October2010
George Clooney during a 2010 White House visit. Wiki Commons
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Ben Affleck speaks at a Feed America event in 2009. Wiki Commons
MattDamoninHaiti2009
Matt Damon visits Haiti in 2009. Wiki Commons
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Clint Eastwood speaks at a Take Pride in America event. Wiki Commons
Jolie
Angelina Jolie revealed that she opted for a double mastectomy after a genetic test showed she had a strong likelihood of developing breast cancer. Wiki Commons