WILMINGTON, Del.—What, exactly, is Joe Biden supposed to do with this? What is he supposed to say?Today in Washington, D.C., a mob urged on by President Donald Trump stormed the U.S. Capitol. Trump’s decisions led to police tear-gassing protesters in front of the White House in June. His decisions led to the same outcome in the Capitol Rotunda today, and Vice President Mike Pence and Vice President–elect Kamala Harris were rushed away.

The internet is real life.This was the lesson of Pizzagate in 2016, which made clear that conspiracy theorizing on message boards can lead to a man carrying a rifle into a restaurant. This was the lesson of the deadly Charlottesville rally in 2017, which made clear that online hate is a precursor to offline violence.This was the lesson of the Christchurch mosque shootings in 2019, which were carried out by a terrorist who was radicalized on YouTube and live-streamed the attack on Facebook.

Insurrection Day, 12:40 p.m.: A group of about 80 lumpen Trumpists were gathered outside the Commerce Department, near the White House. They organized themselves in a large circle, and stared at a boombox rigged to a megaphone.

The Ellipse was a deep sea of delusion. Thousands of President Donald Trump’s supporters drove or bused or flew from all corners of the United States to meet here, in the treeless space beside the White House, in their quest to overturn the results of the 2020 election with the help of congressional Republicans. “As I live and die, we will never give up until we have a fair-and-square election!” a small child in a rainbow hat yelled into a megaphone.

This afternoon, a mob of pro-Trump extremists stormed the Capitol, where Congress had convened to certify Joe Biden’s victory in the 2020 election. The insurrectionists clashed with police, scaled walls, broke windows, and carried Confederate and Trump flags throughout the Capitol’s halls. Members of Congress and their staffers sheltered in place before being evacuated from the building.