Sedition Hunters
Sedition Hunters is an online community of open-source intelligence investigators that are trying to identify the people who took part in the January 6, 2021, United States Capitol attack. They examine still photos and video footage from the Federal Bureau of Investigation (FBI), online media sites like Twitter and Parler, video platforms, and other social media and turn their results over to the FBI. The FBI has relied on groups like the Sedition Hunters due to the large number of suspects, estimated at 2,000. References

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Aftermath of the January 6 United States Capitol attack
Virtual communities