SPLC says it's working with Jan. 6 committee to track Trump's ties to extremism

• The center submitted a report on the Proud Boys to the committee in April, calling their participation in the insurrection "an attempt to overthrow democracy and liberal pluralism in favor of an authoritarian political order."

Why it matters: The SPLC's materials are "part of under-the-radar help investigators have received from outside groups and experts with relevant knowledge," Politico writes.

• The committee plans to hold a hearing on Trump's links to extremism.

The big picture: In a March report, the SPLC noted that the number of hate and anti-government extremist groups declined for the third year in a row in 2021 — even as their ideologies gained traction and entered the mainstream.

• Buoyed by the Jan. 6 Capitol insurrection, white nationalists, neo-Nazis and far-right militias have found ways to leave the fringes and infiltrate the highest levels of government, the SPLC said.