This week, five leaders of the violent far-right group Proud Boys are on trial in Washington D.C., charged with seditious conspiracy for conspiring to overthrow the government, in the U.S. Capitol attack on Jan. 6, 2021.

Andy Campbell is the author of We Are Proud Boys and reports on extremism as a Senior Editor at HuffPost. He’s been covering this story from the courtroom. And he’s with us today to explain how the case could reveal the inner-workings of the group, their connections with Republicans, and how the American government has responded to the threat extremist groups pose to democracy.