Joseph Kony

*Rihanna, Sean Combs and Oprah Winfrey are among those moved to action after watching filmmaker Jason Russell’s stirring short “Kony 2012,” about the world’s most wanted man, Joseph Kony.

Russell posted the 30-minute film about the Lord’s Resistance Army (LRA) leader on YouTube Wednesday, March 7, and overnight it had already been viewed by 32 million people around the globe.

The short documentary, made to promote the efforts of grass roots youth movement Invisible Children, highlights the plight of African kids who are abducted from their families and forced to serve Kony’s LRA either as sex slaves or child soldiers.

Last year, the U.S. agreed to send army consultants to Uganda to help local forces search for Kony and bring him to justice, but they fear that waning support for the cause will prompt legislators to pull the project, enabling the LRA to claim a major international victory.

“Kony 2012” ends with a call to action – Invisible Children members and supporters plan to “blanket” the world with posters and images of Joseph Kony on April 20 in a bid to make the rebel leader so famous that he can no longer stay hidden.

Rihanna has reportedly reached out to the organization and has expressed an interest in creating a video to help raise awareness, according to TMZ.com. Also, Bieber, Diddy and Oprah Winfrey have tweeted their support to the cause.

Oprah writes, “The fact that #InvisibleChildren haven’t given up makes them heroes in my book.”

Diddy adds, “Dear Joseph Kony, I’m Gonna help Make you Famous!!!! We will stop you… All 6,000,000 of my followers RT (retweet) Now!!!”

Bieber tweeted his fans, “This is not a joke. This is serious. Together we can #MakeAChange.”

Watch the film in its entirety below. Learn how you can support this worldwide effort at Kony2012.com.