I have little doubt some sort of disturbance was planned in advance, incited, and orchestrated, and my bet is on the same people who refused the presence of National Guard to ensure it would not get out of hand. There's a Pelosi and an army of Trump haters, possibly from both sides of 'the aisle', at the bottom of this, and with the disappointment they had at people not actually breaking in fast enough, arranged for the doors to be opened, a couple of people to be killed, and incredible and ongoing hyperbole so they could blame their political opposition.
I really don't think Trump had diddley-squat to do with it.