Detroit has experienced 37 percent fewer robberies than it did last year, and Police Chief James Craig is crediting armed citizens for the drop.
http://www.washingtontimes.com/news/2014/jul/16/detroit-police-chief-says-armed-citizens-are-curbi/
Detroit police chief wants citizens to arm themselves
http://www.washingtontimes.com/news/2014/jan/6/editorial-eliminating-gun-crime/