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Alleged Southern California arsonist is a conspiracy theorist.

On Wednesday, police in Orange County, California arrested Forrest Clark, aged 51, on suspicion of arson in regards to a fire that has burned more than 6,000 acres in Southern California. Clark allegedly sent an email last week warning “this place will burn.”

Reporter J.J. MacNab, who is currently a fellow George Washington University’s Program on Extremism, has written a lengthy Twitter thread reporting that Clark’s Facebook page shows that he is a long-time conspiracy theorist “who believes in just about every kooky conspiracy out there, including QAnon, Pizzagate, Jade Helm 15, flat earth theories, NESARA, Jesuit [conspiracies], shape-shifting lizard overlords. You name it, he believes it.” Tied to these conspiracy theories is Clark’s apparent adherence to “sovereign citizen” ideology, an anti-government worldview that has sometimes motivated political violence.

MacNab’s reporting is especially salient in light of ongoing debates about whether social media companies like Twitter should allow conspiracy theorists like Jones to post content.

Here are a few key tweets: