As the president tries to send in the National Guard, a phalanx of conservative influencers is working to support his claim that Portland is burning. PORTLAND, Ore. — During the four hours Nick Sortor sat in jail on the morning of Oct. 3, the conservative influencer wondered if anyone even knew he’d been arrested. He had no cellphone. He could make local calls, but he didn’t know anyone’s number in Portland. Outside, though, his online allies were blaring the news: A right-wing journalist — and not the leftists who assaulted him at an ICE protest — had been arrested by...