Why do the ritors ask for Justice?

[Athene]

Guilt or innocence isn't a matter for police officers to determine.

What about this "justice" business you were carrying on about? Respecting the process. 
I thought you were all for that.

Again, the primary reason for police interaction is not what is being judged or what is being punished" by a cop shooting someone. It is how an individual is perceived during a confrontation or in an instance where an officer has to subdue or take a person into custody.

Sure. That's a fair statement to make.

But, I also know that some people are automatically perceived as being an threat by many officers, PRIOR to these confrontations taking place. That has the potential to seriously affect an officer's ability to assess a situation and make judgement calls.  Particularly when combined with one or more of the following: General disdain for entire subgroup of people, an authoritarian personality, or an itchy trigger finger.

If a person or a suspect acts aggressively towards an officer (again independently of any crime they may have been accused of) then that action alone warrants the officer to escalated the situation even unto the suspect's/person's death.

That's kind of my point. When a cop's already already pre-determined that a person is a dumb, violent animal, almost anything they say or do can be interpreted as an act of aggression. 

Like simply being nervous, or asking a question.