"Would republican civilians see empathy for the dead americans who were democrats?"
You mean a couple hundred paid agitators that were bussed up from asylums in south America?
Because that's the story your average republican voters would believe. I know it's a bit hyperbolic but some of the shit I've heard them say about Mrs Good, and in general about the current protests leads me to feel that there is no limit to the lies an average republican voter is willing to suck down.
All that said I do not believe the military would follow those orders, but I'm not sure they would interfere if the DOJ started killing protesters in front of them.
That's why I'm a decent person, not because of fear of government,or fear of some God. Nope its the fucking paper work. I have 5 email address I check one every week or so the others I just go deleat everything quarterly.