How is people feeling safe non-economic? That's silly. People from all walks of life expend unfathomable amounts of money to feel safe every year--whether or not it actually makes them safe in any meaningful way. Feeling safe is one of the great drivers of real estate value: separating oneself from unsavory characters can be quite expensive, whether it's choosing an apartment with window bars on the right side of town versus one without, owning a home with a network connected camera system in the burbs, owning a home in a gated community, owning a flat in building with a doorman and security in the city, or a multi-millionaires building personal fallout vaults in New Zealand. the home security market is surely in the multi-billions in the US alone, even without considering real estate. It's all economic.
Catching criminals is tangible, tautologically so. If they're in custody, a criminal cannot commit more crime. Segregating the criminal element from polite society is an economic activity that affects other economic activity. Nobody but criminals, crazies, and trust-fund socialists want to live in an area with no, or ineffective police.