The 13th annual Gathering of the Juggalos is underway in Cave-in-Rock, Ill., this weekend, and the ninjas are not fucking around this year: Violent J and Shaggy 2 Dope, the godfathers of the Juggalo movement and the duo that comprises the Insane Clown Posse, reportedly sat everyone down in the seminar tent this afternoon to announce that they're taking legal action against the FBI.