Interesting,
690 civilians killed by police so far this year. Will end up about 1000 for the year.
Police fatalities in the line of duty so far this year 72. Just 19 by gunfire. Will probably be about 30 by the end of the year. So, how likely is it that a cop is killed buy gunfire?
There are about 1,100,000 police officers in the USA.
30/1,100,000 =.0027% chance of being killed by gunfire in one year, or 0.1% in forty years.
Put another way, a police officer has a one in 366,666 chance of being killed by gunfire in one year, a one-in-a thousand chance in a career of forty years.
There are many jobs more dangerous than Police Officer.