Outraged by the Jan. 6 Capitol riot, a wilderness survival trainer spent years undercover climbing the ranks of right-wing militias. He didn’t tell police or the FBI. He didn’t tell family or friends. The one person he told was a ProPublica reporter.
There were a couple of linked articles that the author wrote as a consequence of the information that was gathered. It also seemed to imply that there was more information coming, but I don’t really get why he hasn’t released everything yet.