So, if the problem is the police not showing up your remedy is to arm the country? Find out why the police are not responding properly and fix that problem rather than flooding the country with guns so every Tom, Dick, and Harry can spray the community with bullets. Duh!
If every Tom, Dick, and Harry, who are law abiding, have no police record (including those stifled by Obama's Promise Program), had a gun, with a license to carry it, there would be ZERO MASS SHOOTINGS ever again, except for the mass shooter who also happens to be suicidal.
Neither of these past 2 mass shooters (El Paso and Dayton) were suicidal.