'Atlantic' writer Mike Giglio profiles the Oath Keepers, a pro-Trump militia group, in a new article. They have recruited thousands of police, soldiers and veterans. We talk about what they might do on Election Day and after. "We, as Americans, are so comfortable with the idea of sending people out into foreign wars. And now [these militia groups are] starting to look at America itself as a part of that battle space." Giglio also shares insights from covering civil wars overseas.