They have always been around. They are fringe cult like supremacists groups. Anytime there is a Democrat in power they appear. They have never had a president that openly supported them. After trump they will be hunted down by security agencies and most will retreat. Any confrontation they had with the state they have lost. The last big terrorist act was Oklahoma bombing. The wars in middle made the govt take its eyes off them. Once trump is gone most of the harmless cult followers will just die down but these will have to be taken on