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The infamous hip-hop duo filed a lawsuit against the FBI on Thursday, claiming they falsely categorized their fans, known as "Juggalos," as a "loosely affiliated hybrid gang" in its 2011 National Gang Threat Assessment. The ACLU will represent the band in the lawsuit. 

According to the report, an investigation of police and media crime reports showed multiple crimes committed by people wearing tattoos and clothing associated with the Juggalos. These crimes include assault, robbery, drug sales, and murder. 

Four fans of the ICP have joined the lawsuit, including an active-duty soldier with Juggalo tattoos. According to the lawsuit, the FBI's designation "places him in imminent danger of suffering discipline or involuntary discharge from the Army."

"Among the supporters of almost any group…there will be some people who violate the law. Inevitably, some will do so while sporting the group's logos or symbols," the filing said. "However, it is wrong to designate the entire group of supporters as a criminal gang based on the acts of a few. Unfortunately, that is exactly what happened here."

The FBI and U.S. Justice Department declined comment. 

Reach Jeremy Fuster on Twitter.