Justin Bieber's Hat Stolen At Airport

INSIDE EDITION reports on the latest mob scene of crazed Justin Bieber fans who knocked down his own mother in the frenzy.

It's more Bieber mania!

One thousand screaming fans swarmed Justin Bieber as he arrived in New Zealand on Wednesday. The 16-year-old pop star had to be escorted through the airport. He was wearing a purple baseball cap.  
Bieber's hat was stolen right off his head and his mom was knocked down.  

Justin tweeted:

"The airport was crazy. Not happy that someone stole my hat and knocked down my mama. Come on people."