Cites with the highest gun crime are all ran by Democrat mayors, So it looks like the solution to gun crime is to ban Democrats
Detroit, MI – Mayor Mike Duggan – DEMOCRAT
Oakland, CA – Mayor Jean Quan – DEMOCRAT
Memphis, TN – Mayor A C Wharton – DEMOCRAT
St. Louis, MO – Mayor Francis G. Slay – DEMOCRAT
Cleveland, OH – Mayor Frank G. Jackson – DEMOCRAT
Baltimore, MD – Mayor Stephanie Rawlings-Blake – DEMOCRAT
Milwaukee, WI – Mayor Tom Barrett – DEMOCRAT
Birmingham, AL – Mayor William A. Bell – DEMOCRAT
Newark, NJ – Mayor Ras Baraka – DEMOCRAT
Kansas City, MO – Mayor Sly James – Independent (but probably a DEMOCRAT)
http://www.thefederalistpapers.org/us/the-highest-crime-cities-in-america-all-have-this-one-thing-in-common