How is that a useful service? This is only useful because the criminals exist and are doing it. Are killers providing a useful service because people then use protection so they don't get killed?

Or perhaps it is useful by hardening systems in case you enter a war with another country, but presumably the other country has the same problems so it's a zero sum game.

[delayed]

Killers must be a useful service, because the FBI, CIA and Department of War are all relying in their services.

"By any means" is a current movie with the FBI case.