Attorney General Eric Holder is teaming up with Justin Bieber's manager, Scooter Braun, along with Henry Winkler and a slew of other celebrities to speak out against bullying.

AP

Credit: Jennifer Brett

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Credit: Jennifer Brett

Justin Bieber's manager, Scooter Braun, is part of the anti-bullying campagin. Photo credit: Jemal Countess/Getty Images

Credit: Jennifer Brett

icon to expand image

Credit: Jennifer Brett

Weather Channel anchor Sam Champion, who will headline an upcoming event on climate change in Atlanta; CNN's Anderson Cooper, HLN's Robin Meade, CNN New Day's  Michaela Pereira and NBA stars-turned-commentators Grant Hill, Reggie Miller and Rick Fox are among the other notables participating.

The Cartoon Network will be airing anti-bullying video messages from the famous names.

Here is Holder's message:

http://youtu.be/NMH5Abirdaw

The network invites you to join in, too.

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Helen Gilbert places flowers on her brother Eurie Martin’s grave at Camp Spring Baptist Church in Sandersville. Her brother died eight years ago. Three former Washington County deputies are accused of causing his death and are set to stand trial Monday. (Miguel Martinez/AJC)

Credit: Miguel Martinez-Jimenez