DETROIT — The Insane Clown Posse sued the U.S. Justice Department on Wednesday over a 2011 FBI report that describes the rap-metal duo’s devoted fans, the Juggalos, as a dangerous gang, saying the designation has hurt reputations and business.

The American Civil Liberties Union filed the lawsuit in Detroit federal court on behalf of the group’s two members, Joseph Bruce, or Violent J, and Joseph Utsler, or Shaggy 2 Dope. It also names four fans as plaintiffs.

The FBI report on criminal gangs labeled the Juggalos as a “loosely organized hybrid gang.”

The suit says the designation violates free speech and due process.