She accelerated her car before turning the wheels knowing people were in the path of her car. (Even if you argue that the wheels spinning before the wheels turn doesn't count, cars do not turn rotate on their central axis, so accelerating while turning still endangers people in front of the car.) Nobody can read her mind but the possible consequences of that action are obvious. Legally that constitutes intent, regardless of what we might want to project on her state of mind.
Further, if you do want to talk about state of mind, you cannot argue that any person behaving rationally would choose to commit a felony and flee from LEO in a vehicle in the first place. This is an extremely high-risk move for zero benefit and the video confirms it didn't even take place out of panic, which was my original thought. On the ground in that situation there can be no analysis of "what is she thinking" because she abandoned the reasonable course that anyone there would have expected her to take.
> that shooting her in the head
No confirmed gunshot wound is in her head. Where did you hear this? It appears the ICE officer fired center of mass, as two confirmed gunshot wounds are in her chest and one in her arm.
I realize that arguing these technical issues will not change your mind, because for you the emotion of "people dying is bad" trumps all the reasons it happened. But I hope it will get you to consider what other people are thinking.
> tactically unnecessary, but objectively made the situation worse
That isn't clear at all because you cannot know what the counterfactual is. There were armed people who could have shot James Fields before he accelerated into a crowd. If they had, Heather Heyer would be alive today. If they had shot him, then people would be making the same argument you're making. Hitting the gas while your car is surrounded by people is no different than firing a gun randomly. In the very best case, your are operating a deadly weapon with a total disregard for human life. In some situations (self-defense), that may be justified. But it is not innocent.
The way to stop this from happening is to stop encouraging people to commit crimes by interfering with law enforcement. There are other effective ways to protest. Another good start would be winning elections. Encouraging people to get into violent encounters with law enforcement is risking peoples' lives for nothing. Once you choose violence you don't know where it's going to go.
