PoliticsNation with Al Sharpton 09/22/14

ISIS warning to US: ‘Your forces will return’

ISIS has released a new propaganda audiotape, calling on Muslims to kill Americans. It’s meant as a scare tactic, but is it also intended to push the US to send ground forces to the Middle East? Joan Walsh sits down with Rev. Al Sharpton to answer. ... more Duration: {{video.duration.momentjs}}