Two distant cousins connect online, only to learn that one is a militant leftist and the other is in a right-wing militia. Their story shows the complexities of a timely question: Who's an extremist? NPR's Hannah Allam followed both men for weeks, charting the growth of their relationship and revealing the moment they met in-person for the first time. NPR is withholding their last name, which the two men share, for security reasons. In participating regions, you'll also hear from local journalists about what's happening in your community.Email us at considerthis@npr.org.