Cool, thanks for fixing my mistake!
So that would make the odds of a cop being killed by gunshot about 1/20,000 per year.
I mean, I kinda wonder how much that would change if gun control were tighter in the USA. It's kind of hard to shoot someone if you can't get a gun.
Then the war on drugs could become the war on guns! Everyone wins!
EDIT: decided to deep-dive some basic stats. Yep, that 18000 was how many police departments there are, not police:
https://en.wikipedia.org/wiki/Law_enforcement_in_the_United_StatesThere are 17,985 U.S. police agencies in the United States which include City Police Departments, County Sheriff's Offices, State Police/Highway Patrol and Federal Law Enforcement Agencies
The actual number of police is available here
https://www.statista.com/statistics/191694/number-of-law-enforcement-officers-in-the-us/686665 total police officers in the USA.
So, how about the murder rate for police:
https://www.forbes.com/sites/niallmccarthy/2019/05/08/the-number-of-u-s-police-officers-killed-in-the-line-of-duty-increased-last-year-infographic/#3bdfda9d1189A total of 106 police officers lost their lives on duty last year, a 13% increase on 2017. 55 officers were feloniously killed while 51 died accidentally.
So, 55 actual murders of police officers, out of 686665 means a murder rate conveniently close to 8.0 / 100,000. Now that's not actually much more than the average murder rate of the
USA in general, which is 5.0 / 100,000. And it's a lot less than the average murder rate of dozens of US cities in general.
Also note your 1/20000 figure turned out to be a bit low.
And it's just the average murder rate for Americans of all types. So if cops had that murder rate it would mean they're a safe profession, since murders of them would be at "background" rates.