If the idea is to demonstrate that police work isn't as dangerous as many people think, the fact that police aren't killed on the job as often as grubhub drivers or crossing guards or garbage collectors should make that clear enough. For at least the first two years of the pandemic the number one killer of police was covid. Typically most police die on the job in car accidents. Police are called on to encounter dangerous or uncertain situations, but they are also (supposed to be) trained for exactly that. That's the job. Ideally, none of them would die on the job and they wouldn't kill anyone either.
The USA is the country that defines any adult male died in a drone strike as a terrorist. If the same criteria is applied to the police, the official number would have nothing to do with the real number.