So, it was a premeditated attack - premeditated by the DOJ and the leadership of the DNC.
That's how I see it.
If they could not get (incite) active and violent participation, they'd provide it.
And all obvious deterrents were removed (barriers, national guard)--they even opened the doors.
In contrast to the behaviour of other groups at the drop of a hat, those who were
not Feds at the Capitol (or in their employ) generally refrained from looting, burning, violence, and vandalism, so someone had to do it in order for the narrative to be produced.
Even then, with the exception of shooting Ashli Babbit and beating another woman to death (making the event "deadly"), it took inflammatory language from the Democrats and their shills and the MSM to pimp the idea of an "insurrection" that pales in comparison to the activities of the 'mostly peaceful protest' of the previous summer.