That is false. The legal standard can be found in any "justified use of deadly force" statute. It is to reasonably believe there is a risk of serious injury or death.
-- Merely looking dangerous is not sufficient justification. --
True for a "civilian" (what the cops view the public as), but the practical legal standard for cops allows them much more latitude in use of deadly force.
-- Police, controlled by unions, another entitled class, are abusing their authority. --
Union or not, cops have long held a "us vs. them" view of the world. And they stick together like glue, with ample assistance and support from the law, judges and prosecutors.
“— In our legal system, you may not physically defend yourself until attacked. Threats are not sufficient to justify a violent reaction. —
That is false. The legal standard can be found in any “justified use of deadly force” statute. It is to reasonably believe there is a risk of serious injury or death.”
Not quite that simple, otherwise we should shoot at anyone driving a car.
Recall the Liberal argument that Obamacare is the law of the land.
Shooting someone who has not threatened anyone physically or verbally is WRONG.