Sigh. I don't suppose that you noticed this in my response:
Did I say that Tenn. v. Garner (and it is Garner not Gardner) was a broad decision? Did I even imply it? No, I did not.
We don't know the true circumstances of the situation on the Common, but for argument's sake, let's assume that what has been described did occur -- the perp ran away from police officers and drew a gun while doing so (the fact that it turned out later to be a fake gun is immaterial).
Now would a reasonable person, knowing what the officer knew at the time, believe the individual to pose significant threat of death or serious physical injury to the officers or others? Running away from a police officer and drawing a gun while doing so?
Are you truly asserting that the police officer would not think such a person was serious threat to others?
Hey I can't type.
What I am saying is you are confusing a 4A right with whether or not it would be reasonable to use deadly force. These are separate inquiries.
For example, it may have been reasonable to shoot this guy after he took off running with a gun - that part maybe wouldn't infringe 4A under the Garner std. However, his 4A right could still be violated because they had no probable cause or reason under Terry to question him in the first place.
Under the fruit of the poisonous tree doctrine, if the initial encounter was tainted, then all the evidence, reasonableness, etc. goes right out the window.
You are implying that anytime someone pulls out a gun when running away from someone they would necessarily be a threat to others? If so, keep your head down for the flaming that is about to commence.