Rihanna is sounding off about the verdict in the tragic death of Trayvon Martin.

The singer took to Instagram to post a photo of Trayvon with the caption: "A child was gunned down for no reason! And nothing about that sounds like murder?" She added, "My baby brother is 17, this rocked my whole s---! #thesystemisandhasalwaysbeenphucked"

Many celebrities have reacted to the news that George Zimmerman, who gunned down the Florida teen, was found not guilty of murder charges when the verdict was reached Saturday night (July 13).

"The Trayvon Martin verdict doesn't surprise me. Stanford, FL never wanted Zimmerman arrested. Now he's free to kill another child" shared Ice Cube.

"I know many people are very upset about the verdict, but we must remain peaceful. No matter what, remain peaceful," added Russell Simmons.