I disagree trigger-happy jerks deserve what they get when We the People defend ourselves.
Nobody should have died in that apartment.
She shouldn't have been there in the first place. And our police agencies should not be hiring trigger-happy jerks, nor should they be training people to be trigger-happy jerks.
This murder did not happen in a vacuum.
I've never been involved in law enforcement, but i've seen enough criminally minded people that I wouldn't want to have to deal with them on a confrontational basis.
I think a lot of people will tend to turn into trigger happy jerks if they confront enough bad apples on a daily basis. There are some cops that weren't trigger happy jerks, and as a result, they got killed, so this tends to reinforce the idea among the cops that being a trigger happy jerk will increase your probability of living.