No.......not from what I had seen in video. She didn't pose an imminent danger or threat, was unarmed, female, officers in stairwell. Nope not justified unless other facts come to light. The shooter did not give verbal commands, did not attempt to subdue her or block her, opted to shoot her instead. If the dignitary had been in hallway, or she attacked the executive protection team that would be different. The dignitary was behind a solid core door.....if there was even one.