No, build a wall around those counties.
The map below shows the distribution of murders in Indianapolis, with 135 murders. Although the city extends well beyond the 465 Highway that encircles downtown Indianapolis, there are only four murders outside of that loop. The northern half of the city within 465 also has relatively few murders.
Also on Fox - US murders concentrated in 5 percent of counties | Fox News
Excerpt - "The vast swathes of the United States with no murders are also the areas where reported gun ownership tends to be by far the highest."
I have just published an article about this - Marion County is in the top (worst) 1% of counties based on murders in 2014, based on Lott's study. Dr. Lott will join me on The Gun Guy Show on WIBC Saturday, May 6 at 5 pm.
New Study: Marion County Among Top 1% of Most Violent Counties in America | 93.1 WIBC