I understand where you are coming from but rather I think it boils down to patriots -- or at least those citizens seeing military service as a good alternative to college -- versus frequently nation-hating leftists, most of whom come from at least middle class privilege, who would never DREAM of putting their own precious selves on the firing line or of saying "Yes sir and No ma'am," to an officer.
I have been in and out of my local V.A. medical clinic twice a month for starting my 3rd year in a row. There are easily as many Black and Brown veterans there nowadays as Whites. Patriotism cuts across all ethnicities and races. Equally true is that bullets and IEDs do not distinguish between people in uniform.
Actually many leftists in this very stream are claiming that her vehicle never touched the agent. She was shot in self-defense for striking him with her vehicle in an attempt to murder him. A trained leftist activist with a 3,000 pound vehicle accelerating forward versus one trained Agent with a hand gun. The attempted murderess lost and the agent won.