A couple of very harsh realities folks:
First, via a court decision your local police officers are not required by law to provide you with protection. The police exist for the safety of the community (aka the local government and its leaders).
Second, unless they are already on the scene there is no way a uniform officer can prevent a crime. An extremely harsh statement but look at the real world folks, if they are next door they are too far away.
Finally, remember when seconds count the police are minutes, if not hours away.
We ALL need to be force multipliers both in observation (neighborhood watch programs) and enforcement in order to provide the local police department with the detailed information required to convict repeated offenders. And yes, to me enforcement means the use of deadly force when required.