Crime Deterrence Quotes
This is a very clear statement of a theory offered by some gun advocates. Opponents observe that if this were true, the parts of the country that had the highest gun ownership would have the lowest gun deaths and crime in general, but that is not true. Obversely, when some jurisdictions like Florida have made guns easier to obtain, the crime rate has not increased as some gun opponents would predict.
The most common example that capital punishment does not work as a deterrent is that while thieves were being hung for their crime, other thieves would circulate among the watching crowd at the scaffold and pickpocket the observers.