I have long noticed that a growing number of pit-bull terriers, mastiffs, or rottweilers is a symptom of a growing insecurity in a town or country with which I have been familiar over an extended period of time. The ferocious debate about aggressive dog breeds in Denmark thus strikes me as misguided (“Shoot the Puppy!” August 22, 2009). It should focus on the causes of growing insecurity rather than dangerous dogs and their masters. In the case of Denmark, the most likely underlying cause of growing insecurity is growing immigration. This is where solutions to the Danish dog debate should actually be sought.