While FOX News mocked the hash tag #BringBackOurGirls on Twitter and called it a "useless exercise in self-esteem," it certainly didn't stop one celebrity from joining the advocate. "Harry Potter's" Emma Watson joined the advocate on Twitter to show support and awareness for the 276 schoolgirls kidnapped in Nigeria.

Aside from the red carpet premiere of "Noah" and filming the latest film "Regression," Watson is also busy being an advocate of change. The former Hogwarts alumni took to Twitter to show her support of the hash tag, #BringBackOurGirls on Twitter.

It's important that these men are held accountable for their crimes and that we keep up the pressure to find these girls. #BringBackOurGirls

— Emma Watson (@EmWatson) May 9, 2014

The hash tag was created to create awareness about the incident involving 276 schoolgirls who had been kidnapped in Nigeria. These girls were kidnapped right from the school in Chibok by a militant group Boko Haram, an Islamist extremist group.

Watson joins the list of other celebrities who have showed their support. These celebrities also include the US First Lady, Michelle Obama. Prime Minister David Cameron also showed his support on Andrew Marr's BBC show.

However, while high profile celebrities and politicians are showing their support for the Twitter hash tag. FOX News calls it a "useless exercise in self-esteem."

"It's an exercise in self-esteem. I do not know how adults stand there, facing a camera, and say, 'Bring back our girls.' Are these barbarians in the wilds of Nigeria supposed to check their Twitter accounts and say, 'Uh oh, Michelle Obama is very cross with us, we better change our behavior'?" stated George Will in a report by Huffington Post.

On the other hand, the hash tag continues to trend on Twitter. As for Emma Watson, her fans have lauded her for her support in the hash tag activism. This isn't the first time Emma has used her fame for an advocate. Back in 2011, the "Potter" star joined a fashion advocate on organic and sustainable clothing by People Tree called "Pure Threads."

Check out more of Emma Watson by clicking on the slideshow.

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