Facebook hasn't removed doctored Pelosi video. Should it?

A doctored video of House Speaker Nancy Pelosi, slowed to make her appear to slur her words, continues to provoke controversy. While YouTube removed the video from its platform, both Facebook and Twitter left it up. The episode sparks questions about the role and responsibility of social media companies to police the truth. For more, Amna Nawaz talks to The Atlantic’s Franklin Foer.