Metro

Bieber’s LI cyberbully deal saves pals

Justin Bieber has filmed a public service anti-cyberbullying video at the request of Nassau County DA Kathleen Rice — to get his handlers off the hook for criminal charges for refusing to help stop a riot of tweenie-boppers at a Long Island mall three years ago.

“I felt strongly that the companies should be held responsible for refusing to help law enforcement resolve this dangerous situation,’’ Rice said. “Unusual cases often require innovative solutions, and I think we were able to find one here.’’

The pint-sized pop sensation collaborated with Rice to make the public-service announcement yesterday, aimed at helping kids fight cyber bullies and avoid other Internet traps.Bieber did the 11-minute, 10-second PSA to take the heat off manager Scott Braun and Def Jam Records executive James Roppo.

Bieber’s company also paid for the cops and other rescue workers who responded to the incident at the Roosevelt Field Mall in Garden City.

The execs had faced misdemeanor charges in connection to an out-of-control mob of 3,000 girls that came to get Bieber’s autograph in 2009. Bieber never came out for the event, and police said Braun and Roppo endangered the kids by refusing to cancel the unsafe event in order to disperse the screaming mob.

In the PSA, Bieber, 18, sat a high-leather backed chair and wore huge, gawky glasses, a white T-shirt and denim coat. He told potential cyberbullies not to make a “small mistake that could follow you for the rest of your life.”

“Sometimes you’d rather be physically beaten up than emotionally damaged.” The tiny hit-maker said he knows what it’s like to be bullied. “I was picked on,” he said. “It’s a tough feeling. But at the end of the day, you can get through it.”