The FBI has come under scrutiny after a leaked document showed the bureau warning that "radical traditionalist" Catholics pose as an extremist threat. 
Kyle Seraphin, a former FBI special agent and federal whistleblower, obtained the document from the bureau's field office in Richmond, Virginia, and published it on the UncoveredDC website.
The document is titled "Interest of Racially or Ethnically Motivated Violent Extremists in Radical-Traditionalist Catholic Ideology Almost Certainly Presents New Mitigation Opportunities."
The FBI in Richmond discusses monitoring Racially or Ethnically Motivated Violent Extremists (RMVE) and their interests in so-called "Radical-Traditionalist Catholics" or RTCs.
The memo notes that FBI investigations have found that there is a "growing overlap" between the far-right white nationalist movement and RTCs.
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