Well, I see why no one has been able to point me to the source of the assertion that 11% of police shootings involve an innocent victim while only 3% of citizen shootings do the same. I had to look high and low to find it.
Here's where it apparently comes from:
It is cited in
Gun Facts 6.0 . The "fact" appears on page 28 where it says:
"Fact: 11% of police shootings kill an innocent person - about 2% of civilian shootings kill an innocent person."
The footnote references a paper titled
Shall Issue: The New Wave of Concealed Handgun Permit Laws by Clayton Cramer and David Kopel. That paper was published in
1994. On page 41 it says:
Another study examined newspaper reports of gun incidents in Missouri, involving police or civilians. In this study, civilians were successful in wounding, driving off, capturing criminals 83% of the time, compared with a 68% success rate for the police. Civilians intervening in crime were slightly less likely to be wounded than were police. Only 2% of shootings by civilians, but 11% of shootings by police, involved an innocent person mistakenly thought to be a criminal.
The short version is that this statistic, which would be truly startling if it were a national figure and true today, actually came from a single study in a single state at least 18 years ago. It was never true nationally, and a lot of things have changed in the 18 intervening years.
This is a good illustration of why it is important to provide source references when we cite statistics in our posts. It lets others evaluate where the data comes from and determine if it is of any use or not. Posting statistics without sources so has a high potential for misleading others, which I'm sure no one on this Forum would deliberately do.