Karen Bleier/AFP/Getty Images
An illustration of an Apple iPhone displaying the Facebook app's splash screen in front of the login page.
On Facebook, there were several pages and groups that joked about rape. But Facebook didn't take these pages down because they didn't violate the site's community standards.
It was only after a successful petition and boycott by advocacy groups and advertisers did Facebook promise to better crack down on these pages. But who's monitoring what's posted on the site, and how are they deciding what's offensive or not on social media?
"These are young kids, often 22-yo wearing flip-flops and t-shirts, and they're just making spot decisions on billions of pieces of content posted every week," said Jeffrey Rosen, professor of law at George Washington University. "They have to decide within a matter of seconds whether or not a particular content violate the policies."