Dude, it's just a Barbie Doll thrown by one of your teeny bopper fans. It's not a commentary on society, so settle the fuck down.
Via Contact Music:
Singer Demi Lovato refused to accept a Barbie from a Brazilian fan during a gig on Sunday because she doesn't agree with the unrealistic body image associated with the doll. Lovato, 20, halted her gig at the Z Festival in Rio de Janeiro on Sunday when a fan threw a Barbie doll onstage.
Lovato, who has battled weight problems and body image issues for years and once sought treatment for an eating disorder, told the crowd, "I spent my whole life trying to be this and trying to look like this. And guess what? I'm not this...I've been through so much in my 20 years of life. I know how you guys feel and I want to show you guys that you can get through it because I'm living proof right here."
The singer/actress then threw the doll back into the audience.