Kill your neighbor as yourself: Officer Amber Guyger's case of mistaken situation

Comment published on New York Times blog in response to news article, “Amber Guyger, Ex-Dallas Police Officer, Is Guilty of Murder for Killing Her Neighbor,” October 1, 2019, https://www.nytimes.com/2019/10/01/us/amber-guyger-trial-verdict-botham-jean.html#commentsContainer&permid=102850010:102850010 (I have added some points in parentheses):

What is disturbing about this case is that in America we use law to make political points.  

Many people are happy that she was found guilty, as too many blacks have been wrongly (or mistakenly?) killed by cops.  One could be wrong about her and still right about this.

It certainly seems like she over-reacted.  Presumably, if she did think him an intruder in her own apartment, she still should not have shot him if he wasn't trying to shoot her.  

It is chilling to think that you could be sitting quietly in your home in front of your TV, and someone who enters your apartment thinking it theirs kills you just because you are there.  

One thing that would have prevented this killing is if she had not had a gun.  (But it’s also terrible judgment for a cop to be allowed to exercise.  Being in the wrong place (and being black) are insufficient criteria to justify being shot.  And a police officer should have other resources to use first in response.  Except that police officers today are trained to believe that any apparently unarmed civilian they encounter may kill them, and that they should consider that they themselves are the principal persons in danger and their obligation of self-defense as superseding all other concerns.)     

The political point is the one that matters.  Will cases like this lead to fewer police killings of unarmed, and especially minority, citizens?  

We live in a country where anyone can be afraid of anyone.  We need to change social and economic conditions so that there are fewer crimes, and people can be less afraid.  And we need fewer people with guns, including cops.   

This situation does not change if the fear that apparently motivated her to kill him was reasonable or not.  

It is an unusual situation since most police killings of black men occur in situations defined as ones of potential violent crime.  It may not be so unusual in that the cop with a gun misjudged the situation.   

I'm not sure that Jean and Guyger are not both, in a way, victims of America.  (Or better: both are symptoms).