After targeting one former FBI director he forced out, Trump raised the prospect of an investigation into a different former FBI director he forced out.For more than four years, a wide variety of Republican conspiracy theorists clung to a ridiculous idea about the Jan. 6 attack: It was federal law enforcement, they’ve claimed, that secretly instigated the insurrectionist assault on the Capitol. The absurd claims grew so common that they were given a name: the “fedsurrection” narrative.Indeed, at the heart of the theory is the idea that insurrectionist rioters were actually the victims on Jan. 6: These poor, unsuspecting partisans...