This is a continuation of the longer-running trend described by Dylan Polk in Guns & Ammo: “Crime rates have dropped as gun ownership has risen, despite a population growth” over the 1993-2013 period.
As always, it can be difficult to conclusively prove a direct causal link between gun ownership and falling crime rates. But such statistics certainly undercut any claims that more guns will lead to more crime.
The recent experience of college students Nour Skargee and Sable Nehme support the thesis that guns can prevent violent crime. When home invaders burst into their apartment, Sable “ran to her bedroom, retrieved her gun and pointed it at the culprits.”