" Other evidence also suggests that armed citizens are very responsible in using guns to defend themselves. Florida State University criminologist Gary Kleck, using surveys and other data, has determined that armed citizens defend their lives or property with firearms against criminals approximately 1 million times a year. In 98 percent of these instances, the citizen merely brandishes the weapon or fires a warning shot. Only in 2 percent of the cases do citizens actually shoot their assailants. In defending themselves with their firearms, armed citizens kill 2,000 to 3,000 criminals each year, three times the number killed by the police. A nationwide study by Kates, the constitutional lawyer and criminologist, found that only 2 percent of civilian shootings involved an innocent person mistakenly identified as a criminal. The "error rate" for the police, however, was 11 percent, over five times as high.
It is simply not possible to square the numbers above and the experience of Florida with the notions that honest, law-abiding gun owners are borderline psychopaths itching for an excuse to shoot someone, vigilantes eager to seek out and summarily execute the lawless, or incompetent fools incapable of determining when it is proper to use lethal force in defense of their lives. Nor upon reflection should these results seem surprising. Rape, robbery, and attempted murder are not typically actions rife with ambiguity or subtlety, requiring special powers of observation and great book-learning to discern. When a man pulls a knife on a woman and says, "You're coming with me," her judgment that a crime is being committed is not likely to be in error. There is little chance that she is going to shoot the wrong person. It is the police, because they are rarely at the scene of the crime when it occurs, who are more likely to find themselves in circumstances where guilt and innocence are not so clear-cut, and in which the probability for mistakes is higher."