Political violence and rioting exploded in the United States on Wednesday as extremists loyal to right-wing leader Donald Trump stormed the legislative building in the nation’s capital, Washington, forcing lawmakers to go into hiding in secure locations.

The mob was incited to act by Trump himself. During a speech before thousands of his supporters earlier in the day, the president called the outcome of the November election an “egregious assault on our democracy” and urged people to “walk down to the Capitol” because “you will never take back our country with weakness.”

Soon a crowd was breaking into the Capitol, charging police barricades and breaking windows to try to disrupt the certification of the presidential election that resulted in a clear defeat for Trump. A woman was fatally shot by security forces inside the Capitol, and three other people died under unspecified circumstances. An IED was found at the headquarters of the ruling Republican National Committee, and the nearby headquarters of the opposition Democratic National Committee was evacuated after the discovery of a suspicious package.