Here's Vice quoting the FBI: https://www.vice.com/en/article/the-fbi-just-put-white-natio...
Newsweek last year talking about the growth in the past decade: https://www.newsweek.com/neo-nazi-clubs-us-2095113
Reuters about dramatically escalating number of incidents: https://www.reuters.com/investigations/american-nazis-aryan-...
NPR: https://www.npr.org/2023/07/19/1188111769/active-club-hate-g...