If we are to pretend for a moment that the ridiculous notion of having people be cops is not ridiculous, then the ultimate (in every sense of the word) responsibility of a cop is to die in place of an innocent person.
"Officer safety", including the "no more hesitation" targets, doesn't serve that purpose in any way.
It is better that a hundred cops die from "too much hesitation" than for even one innocent person to die at the hands of a cop. Or under a thugscrum.
If you want to be (or are) a cop, but you are not clear on where your responsibility lies, then you are not fit to hold the "job".
No one "needs" cops, except for the corrupt State. The reavers serve The State at the expense of the people.
Cops make it safe to be a bad guy. They remove most of the risk of facing the real-world consequences of choosing to aggress and steal, by punishing the good people who get victimized. Cops are the point of the spear used to impose counterfeit "laws" and theft. Cop-suckers love them- until they end up as the target.