Last week's riot at the Capitol was many things, but perhaps chiefly it was the culmination of four years of information warfare waged against the country from within the Oval Office.

Why it matters: A sprawling disinformation campaign led by President Trump " and buttressed by his allies in the media, online and in Congress " has severely destabilized the U.S. and makes further acts of violence and would-be insurrection a near certainty.