'Active club' hate groups are growing in the U.S. — and making themselves seen

In late May, a group of young, male neo-Nazis converged outside a bookstore in Bozeman, Mont., to protest a drag queen story hour. Later that day, they hit another similar event in Livingston, Mont. The second weekend in June, the groups targeted the Lewis County Pride Festival in Centralia, Wash. A week after that, it was the Wind River Pride event in Lander, Wyo. And the following weekend, they were at Oregon City Pride, not far from Portland, Ore.

These men, dressed in tactical gear and masks, were members of so-called "active clubs" — a term...