Nobody asked but …
The missions of the police and the military are to hold X safe from all harm at all costs. The problem is that they can neither define X, nor all harm, nor all costs. And since they cannot, they cannot also define X to the taxpayers. Instead they continually roll out new threats of harm, expanding the scope of all harm, running the costs toward infinity, and disregarding very important parts of X that they can no longer keep safe. This is not a public good. A public good must be finite.