This isn't a comment particularly in response to the OP, and know nobody really knows exactly what happened.
So the demo was against ICE being on the streets.
Not sure why someone would participate by driving a car.
But as ICE were the forcus of the protest not a surprise that Renee Nicole Good and her wife gave ICE agents a bit of "lip" and her wife got out of the car to film it.
However whether police, national guards or whatever, they must have training to deal with demonstrators. (Not that we can hold UK police up as a gold standard.)
But even given the "lip" and the filming, and responding in a confused way to conflicting orders about whether to get out of the car or to drive away, to shoot her through the windscreen is totally unacceptable and exactly the reason why police or whoever should NOT be armed.
But then after this catastrophically over reaction by a supposed trained professional to have politicians talk about how he had had to take time off from work a year ago because of an incident involving a car, makes out not only was he as an individual in the wrong, but those in charge are in the wrong.
If someone doing this type of "security" work has lasting PTSD the very last place they should have been sent is to a situation where a similar incident should occur.
So not only is the shooter in the wrong, but the decision makers who let him lose on the street are equally culpable.
The US has become like one of those Hollywood disaster movies, or even zombie movies.
And the worse thing is knowing that Trump is, if educated by anything, is educated by crass US TV shows and movies where muscle bound empty headed male actors are glorified for "settling" disputes by killing everybody.
RIP Renee and all the others sacrificed to a man whose ego has swollen out an rational mental processes he may once have had.
(edited for many typos)