An investigation by The Post reveals numerous new warnings of violence on Jan. 6 that went unheeded, the cost of President Donald Trump’s inaction as the Capitol was overrun and the distrust that has spread across the country in the aftermath.

An investigation by The Post reveals numerous new warnings of violence on Jan. 6 that went unheeded, the cost of President Donald Trump’s inaction as the Capitol was overrun and the distrust that has spread across the country in the aftermath.