The question, “How dumb do you have to be?” comes to mind.
Here, actually, is a case of “Deprivation of Rights Under Color of Law” and “Conspiracy to Deprive Rights” leading to a death. If people generally were raised from childhood around guns, and around gun owners, community shooting matches and all the rest, just as the second amendment intends, you wouldn’t have to teach an aspiring cop the differences between a wadcutter, a round nose, and a blank cartridge. Most everyone would already know those things by the time they reach their double digit years.
Now that it’s been edited out of “education”, and it’s considered “specialized knowledge” by some, it’s more rare in certain circles, and people die because of that willfully engineered ignorance.
Geez; what if you handed a cop a Nagant revolver with those recessed bullet cartridges?
We might remember that blanks can also kill if fired fairly close up, as any vet who remembers the dixie cup demonstration with a blank firing adapter from basic training. At least one Hollywood actor was killed with blank ammunition.