A masked guy breaks down your door w/o an Article III warrant absent exigent circumstances? Yeah, I’d agree. Trick will be that pressing the murder charge would be federal since a federal agent dies in the line of official work (though illegal), which would give the president grounds to push for death.
Those are great for blowing up entire apartment buildings with women and children inside. Not very handy if there are people you do not want to kill.
The US oligarchy has repeatedly shown that it is eager to blow up apartment buildings, schools, or hospitals to kill one “terrorist.”