Nine passers-by were also wounded, and it seems almost certain that some or all were accidentally hit by the police. This isn’t surprising; it’s only in movies that people are good shots during a violent encounter. In 2008, Al Baker reported in The Times that the accuracy rate for New York City officers firing in the line of duty was 34 percent.

And these are people trained for this kind of crisis. The moral is that if a lunatic starts shooting, you will not be made safer if your fellow average citizens are carrying concealed weapons.