A belief upheld by the supreme court:
Warren v. District of Columbia: https://en.wikipedia.org/wiki/Warren_v._District_of_Columbia
Town of Castle Rock v. Gonzales: https://en.wikipedia.org/wiki/Town_of_Castle_Rock_v._Gonzale...
Warren v. District of Columbia: https://en.wikipedia.org/wiki/Warren_v._District_of_Columbia
Town of Castle Rock v. Gonzales: https://en.wikipedia.org/wiki/Town_of_Castle_Rock_v._Gonzale...
You can fire me. You cannot successfully sue me for the costs of my failure.
(Genuine question, no snark intended)
There can still be consequences, just not compensation for losses.
So...how exactly do you expect them to be held accountable? These court cases were examples of the 'democratic process' and the court ruled that the cops have no duty to help you.