John Sullivan, recorded a video of the aftermath, showing police with guns drawn and Babbit lying in a pool of blood in a stairway inside the Capitol.
Sullivan is the founder of the left-wing activist group Insurgence USA. He said he was not at the Capitol as part of the protest but did not specify what exactly brought him there.
Describing the moments leading up to the shooting, Sullivan said protesters were trying to get into the main entrance of the chamber when they came upon two guards who refused to move. - HEREOS
The group then went down another hallway and used flag poles and other items to break windows to get into the chamber before a group of police emerged.
'All we see is these guns coming out of the doorway, just guns, and all you can see is their hands. You could not see faces,' he said.
'Right when I saw that I was yelling to people: 'Guys, there is guns, you don't want to go through there. They're going to shoot.''
Babbit ignored Sullivan's plea and went ahead anyway, he said.
'The second that she climbed through the window, she got shot right in the neck area and fell backwards,' he said.