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Two Senate committees have found that U.S. Capitol Police and other authorities were in possession of more alarming intelligence clues ahead of the Jan. 6 attack than previously documented.

Republicans are resisting the formation of an independent commission to look into the Jan. 6 invasion of the U.S. Capitol. A key exchange from the 9/11 Commission investigation helps explain why.

Survivors and their descendants say facing the truth about the Tulsa Race Massacre is essential in the nation's struggle to confront racial injustice and violence against Black people.

Gregory McMichael, his son Travis McMichael and William "Roddie" Bryan face charges of attempted kidnapping and hate crimes in the death of Arbery, a Black man gunned down while on a run last year.

Some extremists weaponize irony and absurdity as a method for recruiting new members and avoiding criticism. Such tactics can mask the danger that extremists pose, experts say.

In a rare interview, FBI Director Christopher Wray told NPR that the bureau will keep working on the sprawling investigation "no matter how long it takes."

People who stormed the Capitol were radicalized by what they consumed online and in social media. That should sound familiar: Ten years ago, ISIS used a similar strategy to lure Americans to Syria.

The Capitol Police is alert for a possible attack from militia members. There are currently 5,200 Guard members in the Capitol following the Jan. 6 attack on the Capitol building.

The deadly riot at the Capitol on Jan. 6 has forced military leadership to confront the threat of domestic extremism. Rioters that day included current and former service members.

Austin has ordered the armed forces to stand down for one day to address concerns over extremism in the ranks � an issue that has drawn renewed concern in the wake of the attack on the U.S. Capitol.