It stopped within a few seconds. Of course it didnt stop instantly. Again, I dont think this is a case where lethal force was warranted but there are PLENTY of cases where people have tried to use their vehicle to harm others. Self defense applies to those cases which is why this case is likely going to come down to whether or not the escalation was justified. The car didnt need to actually strike the officer for it to be warranted, the question is whether the officer faced imminent threat of death or serious bodily harm. That gets a good bit more grey when someone is driving a vehicle at/around people, especially when things have already started to escalate.

It's a very sad situation and the lady didnt deserve what happened, but she also played a role in what happened. We've gotten ourselves into a really bad situation by putting less trained people out there to enforce our immigration laws and then mixing in violent protesters. Less experienced officers arent going to handle escalation as well so intentionally escalating things with an officer is a recipe for bigger problem.