I got the impression she sped away after they pulled their guns on her and her kid and started shooting at them. Are you sure the secret service agent was thrown over the car and did not jump on it? Would like to hear more about what happened before jumping to conclusions either way. I've seen girls freak out and drive away when a bunch of men come at their car... I would imagine the same would happen if they are pointing guns. Your reaction might be to put your hands up and pray they don't kill you. Other people might hit the gas and duck.
I am reasonably sure that this incident will be more heavily scrutizined than most Use of Force Investigations in most big city police departments.
But based on WHAT WE KNOW, the police were perfectly justified in shooting.
They did NOT know if she was trying to break past the barricades because she had a trunk full of high explosives and was trying to take out the White HOuse or Congress.
They did know she was willing to kill people to get where she wanted to go.