The secretary of the Army and the chief of D.C.’s police force acknowledged Thursday that they did not expect President Trump’s supporters to try to enter the Capitol building, despite extensive online conversations in which far-right groups publicly discussed their plans to do just that.

When that breach did occur, the Capitol Police called D.C. police to help, and eventually the D.C. National Guard moved in to help.

Hundreds of President Trump’s supporters who gathered in Washington to protest the election of President-elect Joe Biden stormed the U.S. Capitol in what amounted to an attempted coup that they hoped would overturn Trump’s election defeat. By the day’s end Wednesday, four people were dead: one from gunfire and three from medical emergencies.

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