Common DGU myths:
There are 1M to 2.5M DGUs annually in the US.
This has its genesis with criminologist Gary Kleck who has a number of studies as to the frequency of DGUs, ranging from 1M to 2.5M DGUs occurring annually in the US. If we assume Kleck’s methodology is flawless (it's not), there are problems with Kleck’s findings that are readily apparent. For example, Kleck’s own research states that in 8% of all DGUs, the gun is fired–wounding an alleged criminal. Kleck also notes that 15% of gun shot wounds are fatal. If we do the math: 2.5M DGUs x .08 woundings x .15 fatal wounds, we should have 30,000 justifiable gun homicides each year in the US. FBI UCARS routinely place the annual number of justifiable homicides at less than 300 per year--from all causes.
In most DGUs, the gun is merely brandished.
In reality, many DGUs aren't. In "Gun Use in the United States: Results from Two National Surveys." Injury Prevention. 2000; 6:263-267, criminal court judges who read the self-reported accounts of the purported self-defense gun use rated a majority as being illegal, even assuming that the respondent had a permit to own and to carry a gun, and that the respondent had described the event honestly from his own perspective. The same study also found guns were used more frequently to harrass or intimidate rather than to ward off or prevent criminal behavior.