I don’t give a damn about the byzantine and stupid details of the New York hush-money case that resulted in Donald Trump becoming the first US president convicted of a felony. Neither should you. Here’s what matters: Ever since 2016, Democrats, the security establishment, and their media allies have sought to nail the Orange Bad Man, and the effort finally paid off on Thursday. But in truth, it was American democracy that got nailed. The verdict obtained by district attorney Alvin Bragg—who could’ve gotten a Manhattan jury to convict Trump of starting the Chicago Fire—represents a decisive step forward for...