How to Forecast the Next Human Storm

When thousands of kids converged on Union Square Park last week to see their favorite social-media celebrity, they took New York City by surprise. But there's no reason, argues Bradley, that our government shouldn't be monitoring these super popular platforms and be better prepared to keep the peace. Plus, why the Manhattan DA's case against Trump must wait, the spectacle of unicorns in freefall and the case for caffeinated seltzer.