Jennifer Aniston attended Omnipeace's "Stamp Out Violence" event

Jennifer Aniston attended Omnipeace's "Stamp Out Violence" event at STK. Other celebrities such as Courteney Cox, and Sheryl Crow also attended the event.

Nicole Richie, who also present there said, "I'm all about making people aware and showing them what the problem is. It's impossible to turn your back on something like this." Other celebrities like Demi Moore and David Arquette also attended the event and the stars wrote letters to President Obama in a group effort to bring more awareness to the important cause.


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