Facebook has, so far, resisted pressure to crackdown on anti-vaccination groups accused of spreading misinformation and conspiracy theories. The explanation the company gives is that it’s reluctant to silence users over personal conviction. But does Facebook have a higher obligation to scientific truth and public health?

On this week’s edition of Beat the Press, Emily Rooney was joined by Adam Reilly of WGBH News, Joanna Weiss of Experience Magazine, Dan Kennedy of Northeastern University and Callie Crossley of WGBH News.