What the heck is a Juggalo, you ask?
In a July FBI report Juggalos were classified as a "loosely organized hybrid gang."
The report said those who identify as Juggalos have committed assaults and vandalism, and a "small number" of them have engaged in more serious crimes.
In the past two weeks, about a dozen businesses in North Portland have received the same threatening note — featuring the black-and-white mask of the Juggalo fans — telling them to leave the neighborhood.
Employees arriving to work at restaurants and shops on November 6 found the black-and-white posters taped to their front windows, reading, "You have been targeted by the Juggalo Family to get...out."
(Insane Clown Posse members Joseph Bruce, aka Violent J, left, and Joseph Utsler, aka Shaggy 2 Dope, are seen after a news conference in Detroit on Jan. 8, 2014.(Photo: Carlos Osorio, AP)
Juggalos are followers of hardcore hip-hop groups such as the Insane Clown Posse, a duo popular in the 1990s that raps about horror scenarios and other violence.
Juggalos insist worshiping the band is simply a lifestyle, but the federal government has labeled them a criminal gang.
Last year, two Corvallis men affiliated with the group made national headlines when they were arrested for beating up strangers.