And what should those consequences be? And what factors should weigh in? And would those same factors be applied to citizens?
Skip, it would all depend on the totality of the circumstances.
Usually, a "reasonableness" standard is used. Would a reasonable person, in those same set of circumstances, without the benefit of 20/20 hindsight react the same way. Below is an article that goes into more detail.
The True Legal Standard
In 1989, the Supreme Court of the United States (SCOTUS) handed down one of the landmark decisions regarding an officer’s use of force. The case was Graham v. Connor (490 U.S. 386). This decision created a national standard that is still in place today. In its decision, the SCOTUS made it clear that an officer’s use of force on a free citizen is to be evaluated as a seizure of the person under the Fourth Amendment. Indeed, the SCOTUS said in its holding:
All claims that law enforcement officials have used excessive force - deadly or not - in the course of an arrest, investigatory stop, or other "seizure" of a free citizen are properly analyzed under the Fourth Amendment's "objective reasonableness" standard, rather than under a substantive due process standard.
What is important to the reader for this article is the phrase “objective reasonableness.” How did the SCOTUS come to this term? Perhaps a quick review of the Fourth Amendment can shed some light. The Fourth Amendment protects the people against unreasonable searches and seizures by the government and its agents. Therefore it would logically follow that officers must act reasonably when seizing people.
Graham set forth several evaluation guidelines and factors to be taken into consideration when evaluating an officer’s use of force. These evaluation guidelines include one overarching direction to anybody who chooses to opine about an officer’s force response:
The calculus of reasonableness must embody allowance for the fact that police officers are often forced to make split-second judgments - in circumstances that are tense, uncertain, and rapidly evolving - about the amount of force that is necessary in a particular situation.
Once the person that chooses to render his/her opinion understands this overarching direction, they also need to be aware of these guidelines while making their determination of the reasonableness of the officer’s force response:
1.) Judged through the perspective of a reasonable officer
a. Officer with same or similar training and experience
b. Facing similar circumstances
c. Act the same way or use similar judgment
2.) Based on the totality of the facts known to the officer at the time the force was applied
a. No matter how compelling the evidence is to be found later
b. No hindsight evaluation
3.) Based on the facts known to the officer without regard to the underlying intent or motivation
4.) Based on the knowledge the officer acted properly under established law at the time