Smearing parents fed up with their kids’ schools as “domestic terrorists” seems to be a wild, incendiary charge with little basis in reality. Yet it’s the basis on which the U.S. attorney general has convened an FBI task force to surveil and intimidate parents who object to what their children are being taught, and how they are being treated, with public tax dollars. The organization that colluded with the Justice Department to create the pretext for chilling voters’ speech has backed down, but the FBI threat remains. School lockdowns have clarified and accelerated the deep, irreconcilable differences among American parents...