A leash reactive dog is not something specific to the Baltimore area. Training this seemingly aggressive and disruptive behavior out of a dog will keep both the dog and owner safer on walks.
One type of effective training when working with a leash reactive dog is called "go get it" training. This training has the dog focusing its attention on something else while being introduced to a situation in which he would have otherwise reacted.
This can be a very effective albiet time-consuming training method. Learn more about go get it training.