Of the 3 fatalities during that riot 2 were self inflicted and the only remaining one was when a rioter breached the last line of defence between the people screaming "Hang Mike Pence!" and 60 to 80 members of congress. There's been speculation that the tunnel entrance down the hallway from where the shooting occurred was where Mike Pence was evacuated through. I was amazed at the level of restraint displayed by the capitol police in contrast to clearing of lafayette square in the summer with pepper balls, tear gas, flash bangs, etc. At that time the park police didn't even bother to order the crowd to disperse until after they had already started attacking the crowd.

They did all that for a photo op vs. Capitol police falling back as far as they could without risking the lives of members of Congress. Even in the aftermath once the building was evacuated and they were clearing the grounds they handled that with kid gloves compared to many of the BLM protests.