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Boogaloo

Update at 4:30 p.m. ET: White House Communications Director Alyssa Farah responded to NPR's request for comment on Elizabeth Neumann's charges that the White House has not addressed the threat of domestic extremism, particularly what Neumann referred to as "right-wing extremism."

In an email, Farah dismissed Neumann's concerns as those of a "disgruntled employee."

Google, Facebook, Twitter and other major tech companies met with U.S. government officials on Wednesday to discuss their plans to counter disinformation on social media in the run-up to the November election.

Over the weekend as large crowds of protesters in Portland chanted in support of Black lives and against an ongoing federal police crackdown around the courthouse, some heads turned when a few young men were spotted in the crowd wearing flak jackets over their Hawaiin shirts.

These were purported to be members of the so-called Boogaloo Boys, a mishmash movement of extremists that calls for another civil war, among other things.

U.S. Attorney General William Barr has repeatedly blamed anti-fascist activists for the violence that has erupted during demonstrations over George Floyd's death, but federal court records show no sign of so-called antifa links so far in cases brought by the Justice Department.

NPR has reviewed court documents of 51 individuals facing federal charges in connection with the unrest. As of Tuesday morning, none is alleged to have links to the antifa movement.