There is an enduring infamy to Jan. 6, and rightfully so. Yet, the madness of the mob is not unique to Trump and his "Stop the Steal" adherents.Trump's "coup in search of a legal theory," as Chairman Bennie Thompson called it on Thursday night's session of the January 6 Committee hearings, is unique in its scope, but not in its assault on American democracy.There has been a trajectory of modern mob formation over the course of the Trump years that the January 6th Select Committee would do well to explore in further hearings.