Everybody knows this in their guts, but few people have the guts to say it.For all the talk about a new crime wave sweeping the country, almost the entire country is safe from homicidal maniacs. In most neighborhoods in the country–or even in the counties where the murders are concentrated–people are perfectly safe. Crime is concentrated in remarkably few areas.Those are the findings of the Crime Prevention Research Center. And of common sense, if you think about it. Unless you live in a bad part of town you don’t worry about taking a stroll through a neighborhood and are totally...