The above article laments that fact that over 100K Minnesotans now have CCWs---over 1 in 40 adults in that state. I do so love to hear their lamentations.
Add one more state with a fairly high CCW density. Is it any accident that we've never heard of a (successful) mass shooting in any area where it is legal for the prospective victims to be armed? Minnesota went 'Shall Issue' in 2003.