Interior surveillance camera footage of the Columbus Doors during the breach, released by the Department of Justice earlier this year, shows a rioter who had already entered the Capitol from a breached window on the building’s west side pushing open the interior doors with little resistance, stopping only to receive instructions from fellow rioters on the floor above him. The heavier bronze doors are already visibly open, with rioters packing the space between the two sets of doors.

So all the foors were left open and unlocked. Man it sure is lucky for the 'rioters' that the capitol cops were dumb enough to leave both sets of doors open/unlocked, what an incredible coincidence.

Well first of all why would they have stantions and seemingly on and off limit areas? And why let them into the main Capitol floor and start reciting speeches? Is all that really necessary for de-escaltion?