Originally Posted by
ralfp
If someone is a threat in such a way that requires a reaction involving the physical force seen in the video, how long should it take for an officer to initiate such a reaction?
As long as it requires in their judgment. That is why we have review boards. Police in this country (generally) are not allowed to operate in a vacuum. That is often expensive for the jurisdictions involved.
We don't have enough information to know what actually went down in this case.