According to the Pew Research Report "Social Media and the 'Spiral of Silence,'" most users of social media are afraid to talk about government surveillance on Facebook, Twitter, and other social platforms. Users were more willing to share their views on government surveillance if they thought others shared the same view. Those who thought they held minority views were more likely to self-censor—an effect known as the "spiral of silence." In 2012, EPIC obtained FOIA documents revealing that the Department of Homeland Security monitored social media for political dissent. A subsequent Congressional hearing led the DHS to cancel the program. For more information, see EPIC v. DHS: Media Monitoring and EPIC: Public Opinion on Privacy.