An email seeking comment from the FBI was not immediately returned.
Among the fans suing is Scott Gandy, of Concord, N.C. He said the Army told him that in order to join, he would first have to get his Insane Clown Posse tattoos removed because they were gang symbols. Gandy said he spent hundreds of dollars removing them, only to be rejected by the Army anyway.
Brandon Bradley, 20, of Sacramento, Calif., said he has been stopped by police and photographed because of his Juggalos tattoos and attire, including a necklace with a man carrying a hatchet. It is an Insane Clown Posse symbol.