A White Man Dies in Utah: Who Needs Courts When We Have Police Officers with Killer Instincts?

I have a bunch of questions:

Is it ever okay for a cop to  shoot and kill an unarmed human being? Is a family ever understanding about having their unarmed loved one shot and killed? If an unarmed person is shot and killed by police, does that always qualify as injustice?

What works as rationale for a law enforcement officer to shoot and kill an unarmed human being? How much of a threat does that person have to be?

Did this European American deserve to die?

http://www.thefederalistpapers.org/us/unarmed-white-man-killed-by-black-cop-heres-how-the-media-reacted

Did any of these African Americans deserve to die? http://www.theroot.com/photos/2013/06/unarmed_black_men_shot_by_police_20_sad_stories.html