Canada

When a nurse messes up ... it may hurt a patient and possibly even kill them but it rarely happens

When an accountant messes up ... the client ends up losing money, get in trouble with their taxes and in the most extreme rare cases might even lead to the death of someone

When a police officer is mostly only ever trained to deal with any problem with a firearm ... when they mess up, they often severely hurt people and when it comes to guns is more likely to kill someone.

A nurses tools are mostly meant to heal people and only in large doses or in very unique doses or situations can it become deadly, in most situations, it takes a bit of effort for a nurse to kill someone

A financial professional would have to go insane and berserk to try to kill you with their bare hands ... their ability to kill you is the same as any other random person you would encounter

A police officer has multiple weapons that they legally carry with them that can severely wound or kill someone very easily ... namely, they legally carry guns, firearms, blunt weapons, tasers and potent pepper spray ... all of which could kill someone if used in the right way ... it's far easy for an officer to kill you than anyone else

and the distribution is usually pretty standard across all fields.

Citation needed.

You really think a highly trained and tightly controlled job like air traffic controller screws up at the same rate as the high school kids stacking crackers at the grocery store?

1. Basically nothing
2. See 1.