President Joe Biden legitimately won a fair and secure 2020 presidential election—and Donald Trump lost. This historical fact has been uncontroverted by any evidence since at least November 7, 2020, when major news outlets projected Biden’s victory. But Trump never conceded. Instead, both before and after Election Day, he tried to delegitimize the election results by disseminating a series of far-fetched and evidence-free claims of fraud. Meanwhile, with a ring of close confidants, Trump conceived and implemented unprecedented schemes to—in his own words—“overturn” the election outcome. Among the results of this “Big Lie” campaign were the terrible events of January 6, 2021—an inflection point in what we now understand was nothing less than an attempted coup.