Some white guy ended up on a no fly list because he posted on a prepper site, and some of the others that posted there were kind of militia-ish.

He was in Hawaii on holiday when they did it.

When 34-year-old U.S. citizen and Mississippi resident Wade Hicks boarded a military flight to visit his wife, a Navy lieutenant stationed in Okinawa, Japan, he did not think it would be a one-way trip. Stopping off in Hawaii to refuel, upon reboarding the plane, Hicks was quickly escorted back off again by armed guards. He was then taken to a secure interrogation room where Hicks was informed he would not be flying anywhere because he turned up on the no-fly list. Hicks has since been stranded on the island state without a way home. ..... Seemingly the only “crime” Hicks has committed that would end in revocation of his ability to fly is his affiliation with the Mississippi Preparedness Project, a prepper organization. Although prepping is not illegal, the FBI has been cracking down on preppers for awhile now, with everything from spying on people who visit prepper websitesto straight up stripping preppers of their Second Amendment rights.