http://www.npr.org/2021/08/18/1028527768/the-fbi-keeps-using-clues-from-volunteer-sleuths-to-find-the-jan-6-capitol-riote
As rioters made their way through the U.S. Capitol on Jan. 6, many of them livestreamed their actions and posted photos and videos on social media. That steady stream of content created an enormous record of evidence that law enforcement needed to sift through to build cases against the accused.
Now, more than 575 federal criminal complaints have been filed, and a striking pattern has emerged: Time and time again, the FBI is relying on crowdsourced tips from an ad hoc community of amateur investigators sifting through that pile of content for clues.
These informal communities go by a number of names: Some go by the moniker Sedition Hunters. Others call themselves Deep State Dogs. Together, they amount to hundreds of people who since Jan. 6 have dedicated themselves to helping law enforcement track down suspects.
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